Siren's Call [Alpha Edition] Fractal Set: Urza's Legacy Type: Sorcery

Set: Urza's Legacy Type: Sorcery Rarity: Uncommon Cost: {2}{U} As an additional cost to cast this spell

Set: Commander 2019 Type: Creature — Human Wizard Rarity: Rare Cost: {2}{B} Morph {B} (You may cast this card face down as a 2/2 creature for {3}

put a +1/+1 counter on Ob Nixilis

I'm eager to see what it will become

" —Trazyn the Infinite

Siren's Call [Alpha Edition] Fractal Set: Urza's Legacy Type: SorcerySet: Alpha Edition Type: Instant Rarity: Uncommon Cost: {U} Cast this spell only during an opponent's turn, before attackers are declared. Creatures the active player controls attack this turn if able. At the beginning of the next end step, destroy all non Wall creatures that player controls that didn't attack this turn. Ignore this effect for each creature the player didn't control continuously since the beginning of the turn.