Xathrid Gorgon

Deathtouch (Any amount of damage this deals to a creature is enough to destroy it.) {2}{B}, {T}: Put a petrification counter on target creature. It gains defender and becomes a colorless artifact in addition to its other types. Its activated abilities can't be activated. (A creature with defender can't attack.)

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6oc84o8epvpb1hfyuorx0k.