diff --git a/src/main/java/electroblob/wizardry/Wizardry.java b/src/main/java/electroblob/wizardry/Wizardry.java
index dea4cf36..42b156ca 100644
--- a/src/main/java/electroblob/wizardry/Wizardry.java
+++ b/src/main/java/electroblob/wizardry/Wizardry.java
@@ -63,6 +63,7 @@ public class Wizardry {
 	// IDEA: Improve the algorithm that finds a place to summon creatures to take walls into account.
 	// IDEA: Replace all uses of Math.cos and Math.sin with MathHelper versions
 	// IDEA: Triggering of inbuilt Forge events in relevant places?
+	// IDEA: Abstract the vanilla particles behind the particle builder
 
 	/* Minor bugs that need fixing at some point:
 	 * - Player skin hat layer shows through wizard hats - Wizard armour breaks rather than just running out of mana (I
@@ -78,6 +79,15 @@ public class Wizardry {
 	// TODO: Switch from IInventory to IItemHandler (Or don't. It's only useful for automation really.)
 	// TODO: Have particles obey Minecraft's particle setting where appropriate
 	// (see https://github.com/RootsTeam/Embers/blob/master/src/main/java/teamroots/embers/particle/ParticleUtil.java)
+	// TODO: Interfaces for various things, like 'stuff that can be put in the central slot of an arcane workbench'
+	// TODO: Go over all the worldgen code, use IWorldGenerator
+	// TODO: Implement a continuous sound system using MovingSoundEntity, allowing continuous spells to have a long sound
+	// loop as well as a start and end sound
+	// TODO: EntityMagicArrow needs attention
+	// TODO: Go over particle spawning on projectile impact and make sure hitvec is used wherever appropriate
+	// TODO: Replace spell IDs in packets with ResourceLocation strings
+	// TODO: Forcefield needs looking at, esp. with regards to projectiles and explosions
+	// TODO: TileEntityArcaneWorkbench needs looking at, esp. regarding inventory and markDirty
 
 	// NOTE: Add melee upgrades to loot tables when they are added.
 
diff --git a/src/main/java/electroblob/wizardry/constants/Tier.java b/src/main/java/electroblob/wizardry/constants/Tier.java
index 6c7d8958..8d9c0e77 100644
--- a/src/main/java/electroblob/wizardry/constants/Tier.java
+++ b/src/main/java/electroblob/wizardry/constants/Tier.java
@@ -10,10 +10,10 @@ import net.minecraftforge.fml.relauncher.SideOnly;
 
 public enum Tier {
 
-	BASIC(700, 3, 12, new Style().setColor(TextFormatting.WHITE), "basic"), APPRENTICE(1000, 4, 5,
-			new Style().setColor(TextFormatting.AQUA), "apprentice"), ADVANCED(1500, 5, 2,
-					new Style().setColor(TextFormatting.DARK_BLUE),
-					"advanced"), MASTER(2500, 6, 1, new Style().setColor(TextFormatting.DARK_PURPLE), "master");
+	BASIC(700, 3, 12, new Style().setColor(TextFormatting.WHITE), "basic"),
+	APPRENTICE(1000, 5, 5, new Style().setColor(TextFormatting.AQUA), "apprentice"),
+	ADVANCED(1500, 7, 2, new Style().setColor(TextFormatting.DARK_BLUE), "advanced"),
+	MASTER(2500, 9, 1, new Style().setColor(TextFormatting.DARK_PURPLE), "master");
 
 	/** Maximum mana a wand of this tier can store. */
 	public final int maxCharge;
diff --git a/src/main/java/electroblob/wizardry/entity/projectile/EntityDart.java b/src/main/java/electroblob/wizardry/entity/projectile/EntityDart.java
index 02eafdb6..cec42cf3 100644
--- a/src/main/java/electroblob/wizardry/entity/projectile/EntityDart.java
+++ b/src/main/java/electroblob/wizardry/entity/projectile/EntityDart.java
@@ -15,7 +15,7 @@ public class EntityDart extends EntityMagicArrow {
 		super(world);
 	}
 
-	@Override public double getDamage(){ return 4.0d; }
+	@Override public double getDamage(){ return 4; }
 
 	@Override public boolean doGravity(){ return true; }
 
diff --git a/src/main/java/electroblob/wizardry/entity/projectile/EntityIceShard.java b/src/main/java/electroblob/wizardry/entity/projectile/EntityIceShard.java
index 483d1c55..936acacc 100644
--- a/src/main/java/electroblob/wizardry/entity/projectile/EntityIceShard.java
+++ b/src/main/java/electroblob/wizardry/entity/projectile/EntityIceShard.java
@@ -17,7 +17,7 @@ public class EntityIceShard extends EntityMagicArrow {
 		super(world);
 	}
 
-	@Override public double getDamage(){ return 6.0d; }
+	@Override public double getDamage(){ return 6; }
 
 	@Override public DamageType getDamageType(){ return DamageType.FROST; }
 
diff --git a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicArrow.java b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicArrow.java
index 64091a91..bf2e5166 100644
--- a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicArrow.java
+++ b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicArrow.java
@@ -252,6 +252,9 @@ public abstract class EntityMagicArrow extends Entity implements IProjectile, IE
 
 			this.ticksInGround = 0;
 			++this.ticksInAir;
+			
+			// Does a ray trace to determine whether the projectile will hit a block in the next tick
+			
 			Vec3d vec3d1 = new Vec3d(this.posX, this.posY, this.posZ);
 			Vec3d vec3d = new Vec3d(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
 			RayTraceResult raytraceresult = this.world.rayTraceBlocks(vec3d1, vec3d, false, true, false);
@@ -262,6 +265,9 @@ public abstract class EntityMagicArrow extends Entity implements IProjectile, IE
 				vec3d = new Vec3d(raytraceresult.hitVec.x, raytraceresult.hitVec.y,
 						raytraceresult.hitVec.z);
 			}
+			
+			// Uses bounding boxes to determine whether the projectile will hit an entity in the next tick, and if so
+			// overwrites the block hit with an entity
 
 			Entity entity = null;
 			List<?> list = this.world.getEntitiesWithinAABBExcludingEntity(this, this.getEntityBoundingBox()
diff --git a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicMissile.java b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicMissile.java
index e2ccd32b..60a3e60b 100644
--- a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicMissile.java
+++ b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicMissile.java
@@ -13,7 +13,7 @@ public class EntityMagicMissile extends EntityMagicArrow {
 		super(world);
 	}
 
-	@Override public double getDamage(){ return 4.0d; }
+	@Override public double getDamage(){ return 4; }
 
 	@Override public boolean doGravity(){ return false; }
 
diff --git a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicProjectile.java b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicProjectile.java
index 0045eb34..93e5b9ef 100644
--- a/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicProjectile.java
+++ b/src/main/java/electroblob/wizardry/entity/projectile/EntityMagicProjectile.java
@@ -70,6 +70,7 @@ public abstract class EntityMagicProjectile extends EntityThrowable implements I
 			// Depends on the horizontal distance between the two entities and accounts for bullet drop,
 			// but of course if gravity is ignored this should be 0 since there is no bullet drop.
 			float bulletDropCompensation = !this.hasNoGravity() ? (float)horizontalDistance * 0.2f : 0;
+			// It turns out that this method normalises the input (x, y, z) anyway
 			this.shoot(dx, dy + (double)bulletDropCompensation, dz, speed, aimingError);
 		}
 	}
diff --git a/src/main/java/electroblob/wizardry/item/ItemSpellBook.java b/src/main/java/electroblob/wizardry/item/ItemSpellBook.java
index eb785366..b43d5889 100644
--- a/src/main/java/electroblob/wizardry/item/ItemSpellBook.java
+++ b/src/main/java/electroblob/wizardry/item/ItemSpellBook.java
@@ -36,7 +36,7 @@ public class ItemSpellBook extends Item {
 
 	@Override
 	public void getSubItems(CreativeTabs tab, NonNullList<ItemStack> list){
-		if (isInCreativeTab(tab)) {
+		if(isInCreativeTab(tab)) {
 			// In this particular case, getTotalSpellCount() is a more efficient way of doing this since the spell instance
 			// is not required, only the id.
 			for(int i = 0; i < Spell.getTotalSpellCount(); i++){
diff --git a/src/main/java/electroblob/wizardry/item/ItemWand.java b/src/main/java/electroblob/wizardry/item/ItemWand.java
index bdc1d183..d772ad55 100644
--- a/src/main/java/electroblob/wizardry/item/ItemWand.java
+++ b/src/main/java/electroblob/wizardry/item/ItemWand.java
@@ -167,7 +167,7 @@ public class ItemWand extends Item implements IWorkbenchItem {
 
 		text.add("\u00A77" + net.minecraft.client.resources.I18n.format("item." + Wizardry.MODID + ":wand.spell",
 				discovered ? "\u00A77" + spell.getDisplayNameWithFormatting()
-						: "#\u00A79" + SpellGlyphData.getGlyphName(spell, player.world)));
+				: "#\u00A79" + SpellGlyphData.getGlyphName(spell, player.world)));
 
 		text.add("\u00A79" + net.minecraft.client.resources.I18n.format("item." + Wizardry.MODID + ":wand.mana",
 				(this.getMaxDamage(itemstack) - this.getDamage(itemstack)), this.getMaxDamage(itemstack)));
@@ -208,7 +208,7 @@ public class ItemWand extends Item implements IWorkbenchItem {
 		// Conditions for the spell to be attempted. The tier check is a failsafe; it should never be false unless the
 		// NBT is modified directly.
 		if(!spell.isContinuous && spell.tier.level <= this.tier.level
-		// Checks that the wand has enough mana to cast the spell
+				// Checks that the wand has enough mana to cast the spell
 				&& spell.cost <= (stack.getMaxDamage() - stack.getItemDamage())
 				// Checks that the spell is not in cooldown or that the player is in creative mode
 				&& (WandHelper.getCurrentCooldown(stack) == 0 || player.capabilities.isCreativeMode)){
@@ -238,7 +238,7 @@ public class ItemWand extends Item implements IWorkbenchItem {
 
 						float cooldownMultiplier = 1.0f
 								- WandHelper.getUpgradeLevel(stack, WizardryItems.cooldown_upgrade)
-										* Constants.COOLDOWN_REDUCTION_PER_LEVEL;
+								* Constants.COOLDOWN_REDUCTION_PER_LEVEL;
 
 						if(player.isPotionActive(WizardryPotions.font_of_mana)){
 							// Dividing by this rather than setting it takes upgrades and font of mana into account
diff --git a/src/main/java/electroblob/wizardry/spell/Wither.java b/src/main/java/electroblob/wizardry/spell/Wither.java
index bd356785..3cacf432 100644
--- a/src/main/java/electroblob/wizardry/spell/Wither.java
+++ b/src/main/java/electroblob/wizardry/spell/Wither.java
@@ -23,6 +23,7 @@ import net.minecraft.world.World;
 public class Wither extends SpellRay {
 	
 	private static final int BASE_DURATION = 200;
+	private static final int BASE_DAMAGE = 1;
 
 	public Wither(){
 		super("wither", Tier.APPRENTICE, Element.NECROMANCY, SpellType.ATTACK, 10, 20, false, 10, SoundEvents.ENTITY_WITHER_HURT);
@@ -40,7 +41,7 @@ public class Wither extends SpellRay {
 						this.getNameForTranslationFormatted()));
 			}else{
 				target.attackEntityFrom(MagicDamage.causeDirectMagicDamage(caster, DamageType.WITHER),
-						1.0f * modifiers.get(SpellModifiers.POTENCY));
+						BASE_DAMAGE * modifiers.get(SpellModifiers.POTENCY));
 				((EntityLivingBase)target).addPotionEffect(new PotionEffect(MobEffects.WITHER,
 						(int)(BASE_DURATION * modifiers.get(WizardryItems.duration_upgrade)), 1));
 			}
diff --git a/src/main/java/electroblob/wizardry/util/ParticleBuilder.java b/src/main/java/electroblob/wizardry/util/ParticleBuilder.java
index 880b437f..d88cd00f 100644
--- a/src/main/java/electroblob/wizardry/util/ParticleBuilder.java
+++ b/src/main/java/electroblob/wizardry/util/ParticleBuilder.java
@@ -72,7 +72,8 @@ public final class ParticleBuilder {
 		/** Single pixel particle.<p><b>Defaults:</b><p>Lifetime: 16-80 ticks<br>Colour: white */ 			DUST,
 		/** Rapid flash, like fireworks.<p><b>Defaults:</b><p>Lifetime: 4 ticks<br>Colour: white */ 		FLASH,
 		/** Small shard of ice.<p><b>Defaults:</b><p>Lifetime: 8-40 ticks<br>Gravity: true */ 				ICE,
-		/** Single green/brown leaf.<p><b>Defaults:</b><p>Lifetime: 10-15 ticks<br>Velocity: (0, -0.03, 0) */ LEAF,
+		/** Single leaf.<p><b>Defaults:</b><p>Lifetime: 10-15 ticks<br>Velocity: (0, -0.03, 0)
+		 * <br>Colour: green/brown */ 																		LEAF,
 		/** Bubble that doesn't burst in air.<p><b>Defaults:</b><p>Lifetime: 8-40 ticks	*/					MAGIC_BUBBLE,
 		/** Scaleable, moving flame.<p><b>Defaults:</b><p>Lifetime: 8-40 ticks<br> */ 						MAGIC_FIRE,
 		/** Soft-edged round particle.<p><b>Defaults:</b><p>Lifetime: 8-40 ticks<br>Colour: white */ 		PATH,
diff --git a/src/main/java/electroblob/wizardry/util/WandHelper.java b/src/main/java/electroblob/wizardry/util/WandHelper.java
index 6c47c18a..a98788fb 100644
--- a/src/main/java/electroblob/wizardry/util/WandHelper.java
+++ b/src/main/java/electroblob/wizardry/util/WandHelper.java
@@ -260,7 +260,8 @@ public final class WandHelper {
 
 	/**
 	 * Applies the given upgrade to the given wand, or in other words increases the level for that upgrade by 1. This
-	 * does <b>not</b> account for the individual or total upgrade stack limits.
+	 * does <b>not</b> account for the individual or total upgrade stack limits or any special behaviour; it only deals
+	 * with the NBT data.
 	 */
 	public static void applyUpgrade(ItemStack wand, Item upgrade){
 
diff --git a/src/main/java/electroblob/wizardry/util/WizardryUtilities.java b/src/main/java/electroblob/wizardry/util/WizardryUtilities.java
index d334e2a2..6cb52655 100644
--- a/src/main/java/electroblob/wizardry/util/WizardryUtilities.java
+++ b/src/main/java/electroblob/wizardry/util/WizardryUtilities.java
@@ -545,6 +545,7 @@ public final class WizardryUtilities {
 	 * private. (You <i>could</i> call {@link EntityCreeper#onStruckByLightning(...)} and then heal it and extinguish
 	 * it, but that's a bit awkward.)
 	 */
+	// The reflection here only gets done once to initialise the POWERED field, so it's not a performance issue at all.
 	public static void chargeCreeper(EntityCreeper creeper){
 		creeper.getDataManager().set(POWERED, true);
 	}