Yes Mother?

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(except in Rebirth)

After obtaining 3 Mom items from the following list ((in Repentance and Repentance+) 3 items with the mom item tag), Isaac gains a stationary Collectible Mom's Knife icon.pngMom's Knife that trails behind Isaac as he moves, dealing 2x Isaac's tear damage on contact. The knife synergizes like Mom's Knife would.

Activated Collectibles

Name ID Icon Quote Description (in Repentance and 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 4 seconds.
(in Repentance)1
(in Repentance+)0
Mom's Pad 5.100.41
Mom's Pad
2 rooms
Mass fear Inflicts fear to all enemies in the room for 4 seconds. (in Repentance and Repentance+) Spawns a blue fly.
0
(except in Rebirth and Afterbirth) Mom's Shovel 5.100.552
Mom's Shovel
4 rooms
Lost but not forgotten Creates a trapdoor that leads to the next floor. Unlocks Character The Forgotten icon.pngThe Forgotten when used on a mound of dirt that appears in Dark RoomDark Room.
4
(in Repentance and Repentance+) 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.
2
(in Repentance and Repentance+) Mom's Bracelet 5.100.604
Mom's Bracelet
1 second
Mother's strength Lets Isaac pick up and throw rocks, TNT.pngTNT, Poop.pngPoops, friendly Dips, Bomb.pngBombs, and other obstacles.
1

Passive Collectibles

Name ID Icon Quote Description (in Repentance and Repentance+) Quality
Mom's Coin Purse 5.100.195 Mom's Coin Purse What's all this...? Spawns 4 random pills near Isaac.
(in Repentance)1
(in Repentance+)0
Mom's Contacts 5.100.110 Mom's Contacts Freeze effect Adds a chance to shoot petrifying tears, which stop enemies in place and prevent them from moving or attacking. (except in Repentance and Repentance+) +0.25 range. (in Repentance and Repentance+) +1.5 range.
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 (except in Repentance and Repentance+) +5.25 range, +0.5 tear falling speed.
(in Repentance and Repentance+) +2.5 range, 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. Chest.pngChests 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 (except in Repentance and Repentance+)+5.25 range, +0.5 tear falling speed.
(in Repentance and Repentance+) +3.75 range. Spawns a Red Heart.pngHeart on pickup.
1
Mom's Perfume 5.100.228 Mom's Perfume Fear shot + tears up Adds a chance to shoot fear tears. (except in Repentance and Repentance+) Decreases tear delay by 1. (in Repentance and Repentance+) +0.5 fire rate.
2
Mom's Purse 5.100.139 Mom's Purse More trinket room Allows Isaac to hold one additional trinket. (in Repentance and Repentance+) Drops a random trinket.
2
Mom's Underwear 5.100.29 Mom's Underwear Range up (except in Repentance and Repentance+) +5.25 range, +0.5 tear falling speed.
(in Repentance and Repentance+) +2.5 range. 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.pngRed Heart.
2
Mom's Pearls 5.100.355 Mom's Pearls Range + luck up (except in Repentance and Repentance+) +1.25 range, +0.5 tear falling speed, +1 luck.
(in Repentance and Repentance+) +2.5 range, +1 luck. Grants one Soul Heart.pngSoul Heart.
2
(except in Rebirth and 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.
(in Repentance)2
(in Repentance+)1
(in Repentance and Repentance+) Mom's Ring 5.100.732 Mom's Ring DMG up +1 Damage. Drops a random Rune or Soul Stone upon pickup.
3

Notes

  • This is a reference to the horror film Psycho.
  • (except in Repentance and Repentance+)Collectible Mom's Box icon.pngMom's Box does not count towards this transformation even though it has the name "Mom" in it.

Unlockable Achievements

Gallery

Trivia

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