diff --git a/src/main/java/com/minelittlepony/unicopia/EquinePredicates.java b/src/main/java/com/minelittlepony/unicopia/EquinePredicates.java
index eb308efb..8662861b 100644
--- a/src/main/java/com/minelittlepony/unicopia/EquinePredicates.java
+++ b/src/main/java/com/minelittlepony/unicopia/EquinePredicates.java
@@ -2,12 +2,8 @@ package com.minelittlepony.unicopia;
 
 import java.util.function.Predicate;
 
-import org.jetbrains.annotations.Nullable;
-
 import com.minelittlepony.unicopia.ability.magic.Caster;
-import com.minelittlepony.unicopia.ability.magic.spell.effect.SpellType;
 import com.minelittlepony.unicopia.entity.Equine;
-import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.item.enchantment.UEnchantments;
 
 import net.minecraft.enchantment.EnchantmentHelper;
@@ -31,10 +27,6 @@ public interface EquinePredicates {
 
     Predicate<LivingEntity> HAS_WANT_IT_NEED_IT = e -> EnchantmentHelper.getEquipmentLevel(UEnchantments.WANT_IT_NEED_IT, e) > 0;
 
-    static Predicate<Entity> carryingSpell(@Nullable SpellType<?> type) {
-        return IS_PLAYER.and(e -> Pony.of((PlayerEntity)e).getSpellSlot().get(type, false).isPresent());
-    }
-
     static Predicate<Entity> ofRace(Race race) {
         return raceMatches(race::equals);
     }
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/BatEeeeAbility.java b/src/main/java/com/minelittlepony/unicopia/ability/BatEeeeAbility.java
index 6bd06037..b1af8057 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/BatEeeeAbility.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/BatEeeeAbility.java
@@ -1,7 +1,6 @@
 package com.minelittlepony.unicopia.ability;
 
 import java.util.Random;
-import java.util.function.Predicate;
 
 import com.minelittlepony.unicopia.AwaitTickQueue;
 import com.minelittlepony.unicopia.EquinePredicates;
@@ -13,7 +12,6 @@ import com.minelittlepony.unicopia.advancement.UCriteria;
 import com.minelittlepony.unicopia.entity.player.Pony;
 import com.minelittlepony.unicopia.util.MagicalDamageSource;
 
-import net.minecraft.entity.Entity;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.sound.SoundCategory;
 import net.minecraft.util.math.Vec3d;
@@ -24,8 +22,6 @@ import net.minecraft.util.math.Vec3d;
  */
 public class BatEeeeAbility implements Ability<Hit> {
 
-    private static final Predicate<Entity> HAS_SHIELD = EquinePredicates.carryingSpell(SpellType.SHIELD);
-
     @Override
     public int getWarmupTime(Pony player) {
         return 1;
@@ -84,7 +80,7 @@ public class BatEeeeAbility implements Ability<Hit> {
         }
 
         int total = player.findAllEntitiesInRange(5).mapToInt(e -> {
-            if (e instanceof LivingEntity && !HAS_SHIELD.test(e)) {
+            if (e instanceof LivingEntity && !SpellType.SHIELD.isOn(e)) {
                 boolean isEarthPony = EquinePredicates.PLAYER_EARTH.test(e);
                 e.damage(MagicalDamageSource.create("eeee", player), isEarthPony ? 0.1F : 0.3F);
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/Suppressable.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/IllusionarySpell.java
similarity index 78%
rename from src/main/java/com/minelittlepony/unicopia/ability/magic/Suppressable.java
rename to src/main/java/com/minelittlepony/unicopia/ability/magic/IllusionarySpell.java
index b38cb9ee..7acf2371 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/Suppressable.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/IllusionarySpell.java
@@ -5,7 +5,7 @@ import com.minelittlepony.unicopia.ability.magic.spell.Spell;
 /**
  * Magic effects that can be suppressed by other nearby effects.
  */
-public interface Suppressable extends Spell {
+public interface IllusionarySpell extends Spell {
 
     /**
      * Returns true if this spell is currently still suppressed.
@@ -13,7 +13,7 @@ public interface Suppressable extends Spell {
     boolean isSuppressed();
 
     /**
-     * Returns true if this spell can be suppressed by the given other spell and caster.
+     * Returns true if this illusion can be suppressed by the given other spell and caster.
      */
     boolean isVulnerable(Caster<?> otherSource, Spell other);
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/SpellPredicate.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/SpellPredicate.java
index c0ae2284..96d50971 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/SpellPredicate.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/SpellPredicate.java
@@ -5,15 +5,21 @@ import java.util.function.Predicate;
 import com.minelittlepony.unicopia.ability.magic.spell.AbstractDisguiseSpell;
 import com.minelittlepony.unicopia.ability.magic.spell.ProjectileSpell;
 import com.minelittlepony.unicopia.ability.magic.spell.Spell;
+import com.minelittlepony.unicopia.ability.magic.spell.effect.ShieldSpell;
+
+import net.minecraft.entity.Entity;
 
 public interface SpellPredicate<T extends Spell> extends Predicate<Spell> {
-    SpellPredicate<Suppressable> CAN_SUPPRESS = s -> s instanceof Suppressable;
-
+    SpellPredicate<IllusionarySpell> CAN_SUPPRESS = s -> s instanceof IllusionarySpell;
     SpellPredicate<ProjectileSpell> HAS_PROJECTILE_EVENTS = s -> s instanceof ProjectileSpell;
-
     SpellPredicate<AbstractDisguiseSpell> IS_DISGUISE = s -> s instanceof AbstractDisguiseSpell;
+    SpellPredicate<ShieldSpell> IS_SHIELD_LIKE = spell -> spell instanceof ShieldSpell;
 
     default boolean isOn(Caster<?> caster) {
         return caster.getSpellSlot().contains(this);
     }
+
+    default boolean isOn(Entity entity) {
+        return Caster.of(entity).filter(this::isOn).isPresent();
+    }
 }
\ No newline at end of file
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractAreaEffectSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractAreaEffectSpell.java
index 916a50da..c92c596e 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractAreaEffectSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractAreaEffectSpell.java
@@ -6,7 +6,6 @@ import com.minelittlepony.unicopia.ability.magic.spell.effect.SpellType;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.SpellTraits;
 
 public abstract class AbstractAreaEffectSpell extends AbstractSpell {
-
     protected AbstractAreaEffectSpell(SpellType<?> type, SpellTraits traits) {
         super(type, traits);
     }
@@ -15,5 +14,4 @@ public abstract class AbstractAreaEffectSpell extends AbstractSpell {
     public boolean apply(Caster<?> source) {
         return toPlaceable().apply(source);
     }
-
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractDisguiseSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractDisguiseSpell.java
index e6e03455..542e5600 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractDisguiseSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/AbstractDisguiseSpell.java
@@ -15,8 +15,7 @@ import net.minecraft.entity.projectile.ProjectileEntity;
 import net.minecraft.nbt.NbtCompound;
 
 /**
- * Shapeshifts the player.
- * <p>
+ * Base implementation for a spell that changes the player's appearance.
  */
 public abstract class AbstractDisguiseSpell extends AbstractSpell implements Disguise, ProjectileImpactListener {
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/ChangelingDisguiseSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/DispersableDisguiseSpell.java
similarity index 92%
rename from src/main/java/com/minelittlepony/unicopia/ability/magic/spell/ChangelingDisguiseSpell.java
rename to src/main/java/com/minelittlepony/unicopia/ability/magic/spell/DispersableDisguiseSpell.java
index 192d9412..727c6257 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/ChangelingDisguiseSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/DispersableDisguiseSpell.java
@@ -3,7 +3,7 @@ package com.minelittlepony.unicopia.ability.magic.spell;
 import java.util.Optional;
 
 import com.minelittlepony.unicopia.ability.magic.Caster;
-import com.minelittlepony.unicopia.ability.magic.Suppressable;
+import com.minelittlepony.unicopia.ability.magic.IllusionarySpell;
 import com.minelittlepony.unicopia.ability.magic.spell.effect.SpellType;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.SpellTraits;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.Trait;
@@ -20,11 +20,11 @@ import net.minecraft.nbt.NbtCompound;
  * <p>
  * Internal. Used by the changeling ability.
  */
-public class ChangelingDisguiseSpell extends AbstractDisguiseSpell implements Suppressable {
+public class DispersableDisguiseSpell extends AbstractDisguiseSpell implements IllusionarySpell {
 
     private int suppressionCounter;
 
-    public ChangelingDisguiseSpell(SpellType<?> type, SpellTraits traits) {
+    public DispersableDisguiseSpell(SpellType<?> type, SpellTraits traits) {
         super(type, traits);
     }
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/PlaceableSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/PlaceableSpell.java
index 85a70bab..50ef1743 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/PlaceableSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/PlaceableSpell.java
@@ -19,12 +19,11 @@ import net.minecraft.nbt.NbtCompound;
 import net.minecraft.util.Identifier;
 import net.minecraft.util.math.Vec3d;
 
-// TODO: We'll need a recipe to make a spell placeable
 /**
  * A spell that can be attached to a specific location in the world.
  * <p>
  * The spell's effects are still powered by the casting player, so if the player dies or leaves the area, their
- * spell loses effect until they return.
+ * spell loses affect until they return.
  */
 public class PlaceableSpell extends AbstractDelegatingSpell {
     @Nullable
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/JoustingSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/RainboomAbilitySpell.java
similarity index 96%
rename from src/main/java/com/minelittlepony/unicopia/ability/magic/spell/JoustingSpell.java
rename to src/main/java/com/minelittlepony/unicopia/ability/magic/spell/RainboomAbilitySpell.java
index 977dd19f..40c57bad 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/JoustingSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/RainboomAbilitySpell.java
@@ -27,7 +27,7 @@ import net.minecraft.world.GameRules;
  * <p>
  * Used by the Rainboom ability.
  */
-public class JoustingSpell extends AbstractSpell {
+public class RainboomAbilitySpell extends AbstractSpell {
 
     private final int rad = 5;
     private final Shape effect_range = new Sphere(false, rad);
@@ -36,7 +36,7 @@ public class JoustingSpell extends AbstractSpell {
 
     private int age;
 
-    public JoustingSpell(SpellType<?> type, SpellTraits traits) {
+    public RainboomAbilitySpell(SpellType<?> type, SpellTraits traits) {
         super(type, traits);
     }
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DarkVortexSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DarkVortexSpell.java
index a78f8d6b..2e4380ff 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DarkVortexSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DarkVortexSpell.java
@@ -1,5 +1,6 @@
 package com.minelittlepony.unicopia.ability.magic.spell.effect;
 
+import com.minelittlepony.unicopia.USounds;
 import com.minelittlepony.unicopia.ability.magic.Caster;
 import com.minelittlepony.unicopia.ability.magic.spell.Situation;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.SpellTraits;
@@ -23,7 +24,7 @@ public class DarkVortexSpell extends AttractiveSpell {
             .with(Trait.DARKNESS, 100)
             .build();
 
-    private int accumulatedMass = 0;
+    private float accumulatedMass = 0;
 
     protected DarkVortexSpell(SpellType<?> type, SpellTraits traits) {
         super(type, traits);
@@ -41,7 +42,11 @@ public class DarkVortexSpell extends AttractiveSpell {
             return true;
         }
 
-        if (accumulatedMass > 20) {
+        if (!source.isClient()) {
+            accumulatedMass += 0.001F * (1 + getTraits().get(Trait.STRENGTH, 70, 120) - 70);
+        }
+
+        if (accumulatedMass > 20 * getTraits().get(Trait.POWER, 1, 60) / 10F) {
             if (!source.isClient()) {
                 Vec3d pos = source.getOriginVector();
                 source.getWorld().createExplosion(
@@ -72,6 +77,10 @@ public class DarkVortexSpell extends AttractiveSpell {
         }).ifPresent(p -> {
             p.setAttribute(0, radius);
         });
+
+        if (source.getEntity().age % 20 == 0) {
+            source.playSound(USounds.AMBIENT_WIND_GUST, 1, 1);
+        }
     }
 
     @Override
@@ -83,13 +92,10 @@ public class DarkVortexSpell extends AttractiveSpell {
     protected long applyEntities(Caster<?> source) {
         if (!source.isClient()) {
             PosHelper.getAllInRegionMutable(source.getOrigin(), new Sphere(false, 1 + ((int)getDrawDropOffRange(source) / 2F))).forEach(i -> {
-                if (!source.getWorld().isAir(i)) {
+                if (!source.getWorld().isAir(i) && source.getWorld().random.nextInt(120) == 0) {
                     source.getWorld().breakBlock(i, false);
-                    if (source.getWorld().random.nextInt(accumulatedMass + 1) == 0) {
-                        accumulatedMass++;
-                        setDirty();
-                    }
-
+                    accumulatedMass++;
+                    setDirty();
                 }
             });
         }
@@ -112,12 +118,12 @@ public class DarkVortexSpell extends AttractiveSpell {
     @Override
     public void toNBT(NbtCompound compound) {
         super.toNBT(compound);
-        compound.putInt("accumulatedMass", accumulatedMass);
+        compound.putFloat("accumulatedMass", accumulatedMass);
     }
 
     @Override
     public void fromNBT(NbtCompound compound) {
         super.fromNBT(compound);
-        accumulatedMass = compound.getInt("accumulatedMass");
+        accumulatedMass = compound.getFloat("accumulatedMass");
     }
 }
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/RevealingSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DisperseIllusionSpell.java
similarity index 90%
rename from src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/RevealingSpell.java
rename to src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DisperseIllusionSpell.java
index 1d127087..f3625be9 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/RevealingSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/DisperseIllusionSpell.java
@@ -14,10 +14,10 @@ import net.minecraft.sound.SoundEvents;
 import net.minecraft.util.math.Vec3d;
 
 /**
- * An area-effect spell that suppresses other forms of magic
+ * An area-effect spell that disperses illussions.
  */
-public class RevealingSpell extends AbstractAreaEffectSpell {
-    protected RevealingSpell(SpellType<?> type, SpellTraits traits) {
+public class DisperseIllusionSpell extends AbstractAreaEffectSpell {
+    protected DisperseIllusionSpell(SpellType<?> type, SpellTraits traits) {
         super(type, traits);
     }
 
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/ShieldSpell.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/ShieldSpell.java
index 6b208fb1..38af19fa 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/ShieldSpell.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/ShieldSpell.java
@@ -10,6 +10,7 @@ import com.minelittlepony.unicopia.Affinity;
 import com.minelittlepony.unicopia.EquinePredicates;
 import com.minelittlepony.unicopia.Unicopia;
 import com.minelittlepony.unicopia.ability.magic.Caster;
+import com.minelittlepony.unicopia.ability.magic.SpellPredicate;
 import com.minelittlepony.unicopia.ability.magic.spell.Situation;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.SpellTraits;
 import com.minelittlepony.unicopia.ability.magic.spell.trait.Trait;
@@ -128,6 +129,7 @@ public class ShieldSpell extends AbstractSpell {
         return source.findAllEntitiesInRange(radius)
             .filter(entity -> {
                 return !FriendshipBraceletItem.isComrade(source, entity)
+                        && !SpellPredicate.IS_SHIELD_LIKE.isOn(entity)
                         && isValidTarget(entity)
                         && !(ownerIsValid && (Pony.equal(entity, owner) || owner.isConnectedThroughVehicle(entity)));
             })
diff --git a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/SpellType.java b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/SpellType.java
index 7eda7047..a0257c4f 100644
--- a/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/SpellType.java
+++ b/src/main/java/com/minelittlepony/unicopia/ability/magic/spell/effect/SpellType.java
@@ -12,10 +12,10 @@ import com.minelittlepony.unicopia.Affinity;
 import com.minelittlepony.unicopia.ability.magic.Affine;
 import com.minelittlepony.unicopia.ability.magic.Caster;
 import com.minelittlepony.unicopia.ability.magic.SpellPredicate;
-import com.minelittlepony.unicopia.ability.magic.spell.CompoundSpell;
 import com.minelittlepony.unicopia.ability.magic.spell.AbstractDisguiseSpell;
-import com.minelittlepony.unicopia.ability.magic.spell.ChangelingDisguiseSpell;
-import com.minelittlepony.unicopia.ability.magic.spell.JoustingSpell;
+import com.minelittlepony.unicopia.ability.magic.spell.CompoundSpell;
+import com.minelittlepony.unicopia.ability.magic.spell.DispersableDisguiseSpell;
+import com.minelittlepony.unicopia.ability.magic.spell.RainboomAbilitySpell;
 import com.minelittlepony.unicopia.ability.magic.spell.PlaceableSpell;
 import com.minelittlepony.unicopia.ability.magic.spell.Spell;
 import com.minelittlepony.unicopia.ability.magic.spell.ThrowableSpell;
@@ -43,8 +43,8 @@ public final class SpellType<T extends Spell> implements Affine, SpellPredicate<
     public static final SpellType<PlaceableSpell> PLACED_SPELL = register("placed", Affinity.NEUTRAL, 0, false, PlaceableSpell::new);
     public static final SpellType<ThrowableSpell> THROWN_SPELL = register("thrown", Affinity.NEUTRAL, 0, false, ThrowableSpell::new);
 
-    public static final SpellType<AbstractDisguiseSpell> CHANGELING_DISGUISE = register("disguise", Affinity.BAD, 0x19E48E, false, ChangelingDisguiseSpell::new);
-    public static final SpellType<JoustingSpell> RAINBOOM = register("rainboom", Affinity.GOOD, 0xBDBDF9, false, JoustingSpell::new);
+    public static final SpellType<AbstractDisguiseSpell> CHANGELING_DISGUISE = register("disguise", Affinity.BAD, 0x19E48E, false, DispersableDisguiseSpell::new);
+    public static final SpellType<RainboomAbilitySpell> RAINBOOM = register("rainboom", Affinity.GOOD, 0xBDBDF9, false, RainboomAbilitySpell::new);
 
     public static final SpellType<IceSpell> FROST = register("frost", Affinity.GOOD, 0xBDBDF9, true, IceSpell.DEFAULT_TRAITS, IceSpell::new);
     public static final SpellType<ScorchSpell> SCORCH = register("scorch", Affinity.BAD, 0, true, ScorchSpell.DEFAULT_TRAITS, ScorchSpell::new);
@@ -55,7 +55,7 @@ public final class SpellType<T extends Spell> implements Affine, SpellPredicate<
     public static final SpellType<DarkVortexSpell> DARK_VORTEX = register("dark_vortex", Affinity.BAD, 0, true, DarkVortexSpell.DEFAULT_TRAITS, DarkVortexSpell::new);
     public static final SpellType<NecromancySpell> NECROMANCY = register("necromancy", Affinity.BAD, 0x8A3A3A, true, NecromancySpell::new);
     public static final SpellType<SiphoningSpell> SIPHONING = register("siphoning", Affinity.NEUTRAL, 0xe308ab, true, SiphoningSpell::new);
-    public static final SpellType<RevealingSpell> REVEALING = register("reveal", Affinity.GOOD, 0x5CE81F, true, RevealingSpell::new);
+    public static final SpellType<DisperseIllusionSpell> REVEALING = register("reveal", Affinity.GOOD, 0x5CE81F, true, DisperseIllusionSpell::new);
     public static final SpellType<AwkwardSpell> AWKWARD = register("awkward", Affinity.GOOD, 0xE1239C, true, AwkwardSpell::new);
     public static final SpellType<TransformationSpell> TRANSFORMATION = register("transformation", Affinity.GOOD, 0x3A59AA, true, TransformationSpell::new);
     public static final SpellType<FeatherFallSpell> FEATHER_FALL = register("feather_fall", Affinity.GOOD, 0x00EEFF, true, FeatherFallSpell.DEFAULT_TRAITS, FeatherFallSpell::new);