When at full health, up to 4 extra hearts can be stored in the jar.
Bombs you place explode only when you use this item. Gives 5 bombs.
Upon use, deals one heart of damage to Isaac and grants +1.2 damage for the current room.
Upon activation, 1 coin will be consumed, and a random pickup may drop, similar to the slot machine.
For 1 coin, damages all enemies in the room.
Creates an explosion in the same area as Isaac, dealing half a heart of damage to him and also damaging all enemies caught in the blast radius.
Upon activation, Isaac loses a half-heart (one whole heart in The Womb onwards) for a random amount of coins, similar to the blood donation machine.
How to Jump
Gives Isaac the ability to jump (over gaps, spikes, etc.).
Removes one red heart container in exchange for gaining 3 Soul Hearts.
When used, converts two soul hearts into a heart container.
Damages all enemies in the room, but deals a heart of damage to Isaac with each use.
Removes a heart container, increases damage and range, and grants a Cube of Meat.
Can be used to place an orange portal and a blue portal. Upon entering a portal, Isaac is teleported to the other portal.