Nightkin Ambusher

Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.) When this creature enters, target player gets four rad counters. This creature can't be blocked as long as defending player has a rad counter.

From Magic: The Gathering.

Open the interactive version on https://mythscribe.cloud/app/tcg/cards/cms6o61en3dv1pb1h5a1cjmoq.