Enemies that touch you are stunned and turn gold. Any enemy killed while in this state will drop a coin.
When hit, spawns up to 2 blue spiders.
A trail of blue creep is left behind Isaac, which damages enemies.
Increases range and shot height.
Wanders about the room, occasionally spawning blue spiders.
Sack of Pennies
Isaac is followed by a small bag that drops a coin every 2 rooms.
Reduces all Shop prices by 50%, rounded down to 7 coins for an item, rounded up to 2-3 coins for a pickup.
Increases damage and speed. Upon entering a room adjacent to a secret room, a howl sound effect will play.
Adds 25 to Isaac's coin count, capping at 99.
Displays Isaac's tear damage and enemy health bars. Spawns a gray spider familiar that wanders around and inflicts a random status effect on any enemies it comes into contact with. Occasionally spawns a blue spider upon clearing a room.
Key Piece 2
Combined with Key Piece 1, unlocks the golden gate in the starting room of The Chest and Dark Room to fight Mega Satan.
Gives Isaac a golden censer familiar which creates a huge aura of light that slows down any enemies and enemy shots inside it.
Spawns a familiar that floats slowly around the room on a zig-zag pattern similar to Boom Fliesdamaging enemies it passes through.
Dark Prince's Crown
Increases range, tears, and shot speed when at exactly one red heart.
Whenever Isaac takes damage, a black ring briefly appears around Isaac, dealing damage to all nearby enemies.
Spawns a friendly familiar leech on the ground that hunts down enemies and heals you for half a heart each time it eats one.
Adds a chance to shoot petrifying tears, which stop enemies in place and prevent them from moving or attacking. Range up.