Item: Sack Head

Spawns a familiar that flies the room while firing, dealing double Isaac's tear damage to enemies that come in contact and retrieving pickups.

A glass of milk follows Isaac and spills on the floor upon taking damage. After the milk spills, Isaac's tear delay is decreased by 2 for the rest of the room.

+2.25 Range Up. +1.5 Tear Height. Isaac's tears travel through walls and appear out of the opposite wall. Isaac's tears also travel over rocks and objects.

While firing, Isaac gains a green aura that poisons nearby enemies.

Reveals all rooms for every floor. However, it does not reveal icons or secret rooms.

Increases range and shot speed, while adding 1 Black Heart.

Spawns a familiar that charges forward when shooting tears and explodes upon contact with an enemy, damaging and poisoning them. The familiar respawns after a few seconds.

Drops a random card or rune. Doubles the effects of cards and runes.

Grants the combined effects of the Blue Map, Treasure Map, and The Compass, revealing the floor layout and all special rooms, including Secret Rooms and Super Secret Rooms.

Increases Damage and Speed, plus adds one Soul Heart.

Reduces all Shop prices by 50%, rounded down to 7 coins for an item, rounded up to 2-3 coins for a pickup.

Pulls pickups towards Isaac.

Spawns 3 random trinkets. Taking damage has a small chance to swallow Isaac's currently held trinket, gaining its effect permanently.

Spawns a familiar that flies around the room in a manner similar to the Boom Fly and explodes on contact with an enemy. Respawns after ten seconds.

1-3 Blue flies randomly spawn every time Isaac gets hit.

Spawns an orbiting eye familiar that fires tears every 2 seconds.

All types of fly except Boom Fly and Red Boom Fly become passive and slowly move towards Isaac. Does not prevent contact damage.

Isaac is followed by a small bag that drops a coin every 2 rooms.

Increases damage and range while reducing shot speed and grants homing tears. Grants a Heart Container and replenishes all Red Hearts.

Increases damage, and adds 1 heart container.