D10

The D10 is an activated item.

Effects[]

Upon use, turns all of the monsters in the room into different ones.

Notes[]

Rerolling a monster will replace it with an entirely new one from any floor, making it dangerous to use early on in the game (as you could get monsters from Depths or later).
D10 attempts to reroll monsters into those with similar max HP, making it somewhat safer to use.
The D10 generally will not reroll Bosses but can reroll monsters spawned by bosses.
The D10 can reroll the Blighted Ovum's Suture.
Using this item can cause some rooms to become impossible to clear. Jumping or flying monsters may become trapped behind rocks after being rerolled, and therefore become unbeatable.
- Sealed doors open after 2 minutes, though there are situations that can prevent this failsafe from triggering.
Flying monsters will only be rerolled into other flying monsters, and ground monsters can only be rerolled into ground monsters. (Horfs are classified as ground monsters by the D10)
Attack Flies, Swarm Flies, and Camillo Jr.s can't be rerolled (even though monsters can be rerolled into them).
Using this item on any monster with several pieces will reroll every piece into a monster. Mr. Maw and Gemini's cord dots are considered pieces, each turning into a new monster.
Using this item in a room with Grimaces will turn them invisible. They will not fire, but the space they occupied will prevent Isaac from moving through it like an invisible wall.
- Some invincible enemies will be rerolled, while others (including most Grimace variants) are completely unaffected.
Using this item in a room with Mom's Hand can be very dangerous, as unless they have already landed, they will be directly on top of Isaac, resulting in the new monsters spawning directly on top of Isaac, instantly dealing contact damage.
Using this item with Broken Remote will first teleport the player and then reroll the enemies in the new room.
Using this item, then exiting the room, such as by teleporting or a bombed door, will cause the enemies to be in their original forms upon your return.
This item is of little utility in Chest or in Dark Room because the D10 doesn't reroll bosses and most of the rooms are populated by bosses.