Key Masters will pay out with either one of these items or the Paper Clip after being given enough keys.
Activated Collectibles [ | ]
Name
ID
Icon
Weight
Description
Dad's Key
5.100. 175
Upon activation, opens all doors in the current room in almost all circumstances, including doors which require a Key to open, entrances to Secret Rooms , and the door to Mega Satan .
Mr. ME!
5.100. 527
Summons a controllable ghost that can perform various tasks depending on what it targets.
Red Key
5.100. 580
Creates a Red Room adjacent to a viable wall, indicated by the outline of a door. These rooms have a 10% chance to be a special room .
Passive Collectibles [ | ]
Name
ID
Icon
Weight
Description
BBF
5.100. 272
Spawns a familiar that flies around the room in a zig-zag pattern and explodes on contact with an enemy. Respawns after ten seconds.
Distant Admiration
5.100. 57
Spawns an attack fly that circles further out than Halo of Flies , but closer than Forever Alone , dealing 75 damage per second.
Forever Alone
5.100. 128
Spawns an attack fly that orbits a long distance from Isaac, dealing 30 damage per second.
Halo of Flies
5.100. 10
Spawns two Pretty Flies that block enemy shots and deal contact damage to flies.
Mom's Key
5.100. 199
Adds 2 keys. Chests will drop additional pickups .
Smart Fly
5.100. 264
Spawns an orbital familiar that blocks enemy shots. Upon taking damage, the familiar will pursue enemies for the rest of the room , dealing 22.5 damage per second.
???'s Only Friend
5.100. 320
Spawns a controllable familiar that deals 37.5 damage per second on touch. It can be moved using the shooting directional keys
Friend Zone
5.100. 364
Spawns a white attack fly that orbits somewhere between Distant Admiration and Forever Alone , dealing 45 damage per second.
Key Bum
5.100. 388
Spawns a familiar that follows Isaac and collects Keys for himself, giving random Chests in return.
Lost Fly
5.100. 365
Spawns fly familiar that moves in a straight line and circles around the first wall or obstacle it hits, dealing 105 damage per second on contact. Spawns fly familiar that moves in a straight line and circles around the first wall or obstacle it hits, dealing 56 damage per second and forcing nearby enemies to attack it.
Big Fan
5.100. 279
Spawns a large orbital familiar that blocks enemy shots and deals 30 damage per second to enemies.
Bot Fly
5.100. 629
Spawns an orbiting fly familiar that fires shielded tears at incoming enemy projectiles.
Fruity Plum
5.100. 649
Gives Isaac a miniature Baby Plum familiar that propels itself diagonally around the room, firing tears behind itself as it travels.
Latch Key
5.100. 343
Grants 1 Soul Heart and +1 luck . Spawns 2 Keys .
Obsessed Fan
5.100. 426
Spawns a familiar that follows Isaac's movements on a delay and deals 30 contact damage per second to enemies.
Papa Fly
5.100. 430
Spawns a familiar that follows Isaac's movements on a 3 second delay, firing tears at nearby enemies.
Psy Fly
5.100. 581
Spawns a fly orbital familiar that chases and blocks enemy shots.
The Swarm
5.100. 693
Spawns eight orbital flies, which turn into Blue Flies after they block a shot. Each time a room is cleared, spawns another orbital fly.
YO LISTEN!
5.100. 492
+1 luck . Spawns a fairy familiar that points out Secret Rooms , Crawl Space entrances, and tinted rocks .