Kerblam! Warehouse

Whenever one or more creatures you control deal combat damage to a player, create a Treasure token. Whenever chaos ensues, until your next turn, noncreature artifacts you control gain "{T}, Sacrifice this artifact: Flip a coin. If you win the flip, this artifact deals 3 damage to any target."

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oae906x51pb1hj0ai4hzs.