Siren's Call [Unlimited Edition] Dinosaur Cat The best engineers recognize when

The best engineers recognize when a problem has already been solved

Set: Dominaria Type: Legendary Creature — Vampire Knight Rarity: Uncommon Cost: {3}{W}{B} Deathtouch

Set: Born of the Gods Type: Sorcery Rarity: Common Cost: {2}{U} Draw two cards

or activate abilities

Set: Khans of Tarkir Type: Creature — Zombie Crocodile Rarity: Common Cost: {4}{B} Defender

Siren's Call [Unlimited Edition] Dinosaur Cat The best engineers recognize whenSet: Unlimited 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.