
Flying
Lieutenant — As long as you control your commander, this creature gets +2/+2 and has "Whenever this creature deals combat damage to a player, that player sacrifices a creature of their choice."
Demon of Wailing Agonies has 1 printing, first in Commander 2014 (2014). EDHREC ranks it #15,020 among Commander cards. It appears most in Ardyn, the Usurper decks (501 on EDHREC). 1 public deck on TCG runs it. It has 6 official rulings.
Deck counts from EDHREC.
Cards that show up in the same decks on EDHREC.