Binding of Isaac: Rebirth Wiki
Binding of Isaac: Rebirth Wiki

Added in Afterbirth

Isaac turns into his mom after picking up any three distinct items in the following list. In this form, Isaac gains a stationary Mom's Knife Mom's Knife that trails behind Isaac as he moves, dealing 2x Isaac's tear damage on contact. The knife synergizes like Mom's Knife Mom's Knife would.

Activated Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Mom's Bottle of Pills 5.100.102
Mom's Bottle of Pills
6 rooms
Reusable pill generator Gives Isaac a random pill. 1
Mom's Bra 5.100.39
Mom's Bra
3 rooms
Mass paralysis Petrifies all enemies in the current room for around 4 seconds. 1
Mom's Pad 5.100.41
Mom's Pad
3 rooms
Mass fear Inflicts fear to all enemies in the room for 5 seconds. 0
Mom's Box 5.100.439
Mom's Box
4 rooms
What's inside? Increases Luck by 1 and doubles the effects of trinkets while held. When used, drops a random trinket on the ground. 3
Added in Afterbirth † Mom's Shovel 5.100.552
Mom's Shovel
4 rooms
Lost but not forgotten Spawns a trapdoor that leads to the next floor upon activation. Unlocks The Forgotten when used on a mound of dirt that appears in Dark Room Dark Room. 4
Added in Repentance Mom's Bracelet 5.100.604
Mom's Bracelet
Mother's strength Lets Isaac pick up and throw rocks, TNT, poops, and other obstacles. 2

Passive Collectibles[]

Name ID Icon Quote Description Added in Repentance Quality
Mom's Coin Purse 5.100.195 Mom's Coin Purse What's all this...? Spawns 4 random pills near Isaac. 1
Mom's Contacts 5.100.110 Mom's Contacts Freeze effect +0.25 range. Adds a chance to shoot petrifying tears, which stop enemies in place and prevent them from moving or attacking. 3
Mom's Eye 5.100.55 Mom's Eye Eye in the back of your head Gives Isaac a chance to fire tears from the back of his head. 1
Mom's Eyeshadow 5.100.200 Mom's Eyeshadow Charm tears Tears have a chance to charm enemies. 1
Mom's Heels 5.100.30 Mom's Heels Range up +5.25 range, +0.5 tear height. Added in Repentance Enemies that touch Isaac take 12 damage. 1
Mom's Key 5.100.199 Mom's Key Better chest loot +2 keys Adds 2 keys. Chests will drop additional pickups. 3
Mom's Knife 5.100.114 Mom's Knife Stab stab stab Isaac's tears are replaced by a knife that pierces enemies, can travel through obstacles and can hurt enemies while Isaac is holding it. Holding down the fire button before firing increases its range and power. 4
Mom's Lipstick 5.100.31 Mom's Lipstick Range up +5.25 range, +0.5 tear height. Added in Repentance Spawns one random heart. 1
Mom's Perfume 5.100.228 Mom's Perfume Fear shot + tears up Adds a chance to shoot fear tears and decreases tear delay by 1. 2
Mom's Purse 5.100.139 Mom's Purse More trinket room Allows Isaac to hold 1 additional trinket. 3
Mom's Underwear 5.100.29 Mom's Underwear Range up +5.25 range, +0.5 tear height. Added in Repentance Spawns 3-6 Blue Flies on pickup. 1
Mom's Wig 5.100.217 Mom's Wig You feel itchy... Adds a chance to spawn Blue Spiders when firing tears. Restores 1 red heart. 3
Mom's Pearls 5.100.355 Mom's Pearls Range + luck up +1.25 range, +0.5 tear height, +1 luck. Added in Repentance Grants one Soul Heart. 2
Added in Afterbirth † Mom's Razor 5.100.508 Mom's Razor It's sharp! Spawns an orbiting razor that deals contact damage and inflicts bleeding on enemies, causing them to slowly take damage over time. 1


  • This is a reference to the horror film Psycho.
  • Mom's Box Mom's Box does not count towards this transformation even though it has the name "Mom" in it.
    • Added in RepentanceMom's Box Mom's Box now counts towards this transformation.

Unlockable Achievements[]



  • The Yes Mother? transformation resembles the original Flash costume for Mom's Knife Mom's Knife.