Sardian Avenger

First strike, trample Whenever this creature attacks, it gets +X/+0 until end of turn, where X is the number of artifacts your opponents control. Whenever an artifact an opponent controls is put into a graveyard from the battlefield, this creature deals 1 damage to that player.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o3t4j1lwppb1hs0hhkfpo.