Page values for "D4"

Rerolls all of Isaac's passive items.

Previously held items are not removed from the pause menu, which makes it difficult to determine which items Isaac currently has if they're too many to appear on the HUD.

When D4 is used with a co-op baby present, the baby's sprite will turn into a glitched sprite of Isaac.

If Isaac rerolls Schoolbag, he will keep both active items, but if he picks up a new active item it will swap with the one currently selected and the other will disappear.

When Schoolbag is rerolled away while another active item is held along D4, the other active item will be dropped on a pedestal. Activating D4 after the other active item is dropped will then reroll D4 itself.

An item picked up is assigned the pool of the most recently generated item; usually this has correct results but a difference can be seen, for instance, by killing a boss, entering a Devil Deal that has items and collecting the boss reward after seeing the Devil items. The boss item will be rerolled to a Devil pool item with D4. Items with no item pool (starting items, fixed drops etc.) will always use the item pool of the most recently generated item from an item pool as a result; if no items from item pools were encountered yet, the treasure room pool is used.

Items that are rerolled are assigned the pool of the item with the highest item ID. This means one reroll with the D4 will probably go as expected, but further rerolls will be proliferated by items from the pool that had the highest ID before the first reroll.