Boss (Item Pool)

Item Pools
Normal / Hard	Treasure Room	Boss	Shop	Curse Room	Secret Room	Devil Room	Angel Room
	Library	Golden Chest	Red Chest	Beggar	Devil Beggar	Key Master	Bomb Bum
	Planetarium	Ultra Secret Room	Crane Game	Rotten Beggar	Battery Bum	Old Chest	Wooden Chest
	Baby Shop	Swine Beggar	Demon Swine	Angel Swine	Gashapon	Bone Saw	Bougie Pedestal
Greed / Greedier	Treasure Room	Boss	Shop	Curse Room	Secret Room	Devil Room	Angel Room

The Boss Room item pool primarily contains stat-increasing passive items. The items in this pool are awarded when clearing most Boss Rooms, or when entering a Boss Challenge Room.

Passive Items

Name	Icon	Weight	Description
Arrow of Light		1	+0.5 shot speed. +0.25 tears. Increases knockback. Grants piercing in darkness.
Bar of Soap		1	+1 Heart Container. Grants a Soul Heart at the start of each floor.
Defibrillator		0.5	1.5x Damage Multiplier in alternating rooms.
Laughing Gas		1	+0.3 Shot Speed. -1 Fire Delay.
Lemon Head		1	+0.8 Tears. +2.5 Range. Reduces tear size.
Moxie's Head		1	1.2x damage multiplier.
Peashy		1	+1 Red Heart container. +0.5 damage.
Philosopher's Stone		1	+1 Red Heart container. +3 File:Gold Heart.png Gold Hearts.
Silver Charm		0.5	+2 Soul Hearts. On pickup, converts all Heart Containers into Soul Hearts at a 1:3 ratio. Will not convert more Heart Containers if Isaac's health bar has been completely filled.
Smooth Stone		1	+0.5 damage. Bosses and enemies with 150 or more maximum health take 50% more damage from all sources.
Snake Oil		1	Significantly increases tear size.
Soap Box		1	+2 Range. Heals for 2 hearts at the start of each floor.
Mom's Suppository		1	-2 Damage, then applies a 1.5x Damage Multiplier. Spawns 1-3 Pills on pickup.
Toy Drum		1	Every two seconds, Isaac's damage is doubled for half a second.
Bell Clapper		0.5	+0.3 Tears. +1.5 Damage. The damage bonus given by this item is multiplied by 0.9 for every tear fired in the same room. Damage bonus reductions are negated when entering a new room.
Brunch		1	+1 Red Heart container and heals for 1 Red Heart.
Milk of Baphomet		1	+1 Heart Container. Taking damage triggers a random on-damage effect.
Sour Patch		1	+1.2 Damage. +0.15 Shot Speed. Tear size down.
Multi-Capsule		1	Spawns 3 random Capsules.
Kompu Gacha		0.5	Spawns a random Capsule, then, for every 5 coins Isaac currently holds: Spawns another random Capsule. Removes 5 coins. Capped at spawning 10 Capules.
Bandage Binder		1	+2 range. +0.4 damage. Spawns 1-3 bone orbitals when taking damage.