Ruinah Deeves

Rythm -For every sorcery or instant you cast, a creature an opponent controls gets +1/+0 and is goaded until end of turn.

Dirge -When you cast a sorcery or instant, create a Dirge token with: "{t}: Sacrifice Dirge, target goaded creature gets 0/-1 till end of turn. When a creature dies this way, draw a card."

If Ruinah Deeves is your commander, it can have a Background. If it does, you can't have creature cards in your deck.