Darksteel Plate [Mirrodin Besieged] Human Assassin if none of them were

if none of them were cast or no mana was spent to cast them

Set: Collectors' Edition Type: Artifact Rarity: Rare Cost: {4} {2}

Set: Murders at Karlov Manor Special Guests Type: Sorcery Rarity: Mythic Cost: {R} Search your library for a card

Set: Fourth Edition Type: Creature — Zombie Rarity: Rare Cost: {1}{B}{B} Other Zombie creatures have swampwalk

Set: Portal Type: Instant Rarity: Rare Cost: {1}{G} Cast this spell only during the declare attackers step and only if you've been attacked this step

Darksteel Plate [Mirrodin Besieged] Human Assassin if none of them wereSet: Mirrodin Besieged Type: Artifact Equipment Rarity: Rare Cost: {3} Indestructible Equipped creature has indestructible. Equip {2} "If there can be no victory, then I will fight forever." Koth of the Hammer