BoostDamage

This item is awarded to Elite monsters and to ghosts spawned from Happiest Mask. Each instance of this item adds 0.1 to the damage multiplier.

Tier 1 elite monsters are awarded 10 of these. Tier 2 elite monsters are awarded 50 of these.

Ghosts are awarded 30 of these.

Trivia

 * This item does not have a name, as it's only referred to in code.