Cainhurst Rooftop Duel

Cainhurst Rooftop Duel enters the battlefield with a Duel counter on it.

{t}: Add {r} or {b}.

{t}, Remove a Duel counter: Each player chooses a creature card from their graveyard. If they choose a legendary creature, they must discard cards with a total mana value equal to or greater than its casting cost to return it to the battlefield.