Old Scratch

Lifelink, menace, trample

As an additional cost to cast this spell, you may sacrifice any number of artifacts and/or creatures. This spell costs {2} less to cast for each permanent sacrificed this way.

Whenever Old Scratch enters, create X 1/1 black Bird creature token with flying and “This creature can’t block,” where X is the number of times you have cast a commander from the command zone this game.