Wielded by an S-rank Gunslinger. The origin of this weapon is unknown.

Ace of Spades

Firearm Very Rare (this item requires attunement) [Prerequisite proficiency in firearms]

After reducing a creature to 0 health, Reload to activate Memento Mori   Memento Mori This Weapon deals an additional 2d4 Radiant Damage and Postpones Reload by 1 extra turn.   Firefly When Reducing a creature to 0 health, the target will explode. All creatures within a 5 foot radius make a DC 15 Dex saving throw or take 1d10 Radiant damage or half as much on a save.