Consumables are Items that are held in an inventory slot below the equipment in the HUD - most can be used only once before being consumed. Consumables can be accessed by pressing Up + Left (or the left face button on console).
Backpack allows the player to carry an additional Consumable, accessed by pressing Left + Right.
Pack of Holding allows the player to carry an infinite amount of Consumables.
In Amplified, all Food also comes in a Magic Food variant. Upon consuming a Magic Food Item that would restore more Health than the player has Empty Hearts for, the player gains 1 Filled Heart Container (replacing any existing Cursed Heart Container(s)) for each Heart of healing past capacity.
Can be stacked. Picking up more will add to any you are already holding.
Comes in stacks of 6.
Magic cookies don't spawn anymore if you have the Synchrony DLC.
Drums[]
Drums are held in the Consumable inventory slot, but are not consumed when used. Instead, using them beats on the drum - allowing the player to stand still and activate various effects.
Using the drum deals Hearts of damage to the player. On the next beat, the player's attacks deal infinite damage and the player's digs can dig up any Wall.
The currently held weapon is granted a new Material. Daggers and Glass Shard may become Special Daggers. Special weapons like Rifle and Blunderbuss are not affected.
A weapon may become Blood, Golden, Glass, Titanium or Obsidian. Daggers may become any of the above, plus Frost, Phasing or Jeweled.
A weapon may become Glass, Titanium or Obsidian. Daggers are guaranteed to be changed to Special Daggers: Frost, Phasing, Jeweled or Electric.
Casts a "Need" spell, resulting in various effects depending on the situation.
The Scroll of Need will have one of the following effects, in decreasing order of priority. Note that an effect is skipped if it would have a lethal or invalid impact on the character (for example, Aria will not be given a Glass Rapier):
Situation
Effects
Two or more enemies are next to the player (either cardinally or diagonally).
Deals 6 damage to all enemies adjacent to the player.
As Dove, it instead duplicates the effects of the Fear Scroll.
0.5 Health remaining or less, and no Potion. (note: unlike blood weapons, cursed health also counts, so must have half curse health left for this to happen)