Key Blade

It increases swing damage by 2 points for each key the player is holding, up to a maximum of 198 points (with 99 keys).

Trivia

 * This item is a reference to Kingdom Hearts

Positive

 * : Occasionally refunds a key upon use.
 * : Occasionally will grant a key when a key or bomb is used.
 * : Temporarily reduces the amount of keys the player consumes.
 * : Eliminates key consumption for the run.
 * : Keys have a chance to duplicate.
 * : Find more keys from blowing up rock.

Mixed

 * : Switches the key and bomb count.
 * : Doubles bombs which can be turned into keys with Impish Key Bomb.
 * : Averages the number of bombs and keys.
 * : Guarantees bombs from chests, which can be turned into keys with Impish Key Bomb.