Spinal Embrace (Retro) [Dominaria Remastered] Vampire Ninja where X is the greatest

where X is the greatest power among other creatures you control

and has "{2}{B}

Joining a guild

Set: Pro Tour Collector Set Type: Sorcery — Rarity: Uncommon Cost: {X}{X}{U} Discard X cards

Might Type: Legendary Creature — Spirit Rarity: Rare Cost: {6}{U}{U}{U} Flying

Spinal Embrace (Retro) [Dominaria Remastered] Vampire Ninja where X is the greatestSet: Dominaria Remastered Type: Instant Rarity: Rare Cost: {3}{U}{U}{B} Cast this spell only during combat. Untap target creature you don't control and gain control of it. It gains haste until end of turn. At the beginning of the next end step, sacrifice it. If you do, you gain life equal to its toughness.