D20

**D20** is an unlockable activated item.

## Effects

* Randomizes all pickups, chests, and trinkets within a room.

## Notes

* Chests are more likely to be rerolled into chests.
* The empty chest object that is left behind after opening any kind of chest can be re-rolled.
* Cannot re-roll pickups into Lil' Batteries, but can re-roll pickups into  Grab Bags which can contain Lil' Batteries.
* Can re-roll pickups into Lil' Batteries and other battery pickups, and can re-roll pickups into  Grab Bags which can contain Lil' Batteries.
* It can re-roll pickups into chests or trinkets and vice versa.
	+ On Chest and Dark Room, the re-rolled chests will always contain items unless they are a Red Chest.
	+ Re-rolls create trinkets far less often than pickups and chests.
* It can re-roll pickups in the Shop.
* Re-rolling pickups duplicated by ,  and  will result on both the original item and the duplicate being the exact same pickup.
	+ Can re-roll both items created by , but only one can still be taken.
* Golden Trinkets rerolled by D20 will cause the resulting pickup to have the golden effect applied to it. If this is a trinket, the affected trinket will act as a normal golden trinket would, otherwise the gold effect will do nothing and will disappear upon leaving and reentering the room.
	+ Additionally, items spawned by chests with the gold effect applied will be golden as well, however other pickups dropped by chests will not be.
* Can reroll coins dropped by  Tainted Keeper into other pickups, but they will still disappear if not picked up quickly.

## Strategy

* In Greed mode, the D20 is a one-item game breaker as long as the Shop has a Lil' Battery available. Leave behind as many coins and pickups in the arena as possible. After using the D20, avoid opening chests until the item has been recharged. Avoid collecting things that do not spawn pickups, help buy Lil' Batteries, or help open chests. This can often be repeated indefinitely, leading to collecting coins, bombs, and many pedestal items.
	+ Due to how the D20 interacts with the , this strategy will not work with  Bethany, as using the D20 while playing as her will destroy all pickups in the room.
		- However, this can be avoided by removing Book of Virtues using
	+ can be used for this strategy if it is found.
		- in D20 mode will also destroy all pickups while also having the .

## Synergies

* : Spawns wisps in the middle ring. In addition to summoning its specific wisp, instead of rerolling pickups, it will destroy all the pickups in the room and has a chance to give a random wisp for each pickup destroyed.
* : Bombing a Bomb Bum while possessing this trinket will convert the Troll Bombs he spawns into regular Bombs. This process can be repeated indefinitely for unlimited Bomb pickups. These Bomb pickups can then be rerolled with the .

## Interactions

* : Re-rolls twice instantly without any benefits.
* When used to reroll pickups in  Tainted Keeper's special shops, pickups may be rerolled into items instead.

## Gallery

* 3DS The icon of D20 as seen on the lower 3DS screen.

## Trivia

* In the original *The Binding of Isaac*, the D20 was unlocked by beating Isaac as  Isaac.