Feldyn, Eldritch Samurai

: When Feldyn, Eldritch Samurai enters the battlefield, target opponent loses X life. Only spend colorless mana on X.
+2: Feldyn, Eldritch Samurai deals 3 damage to target creature or player.
-12: Search your library and graveyard for Feldyn, Eldritch Hero and put him onto the battlefield. Uniqueness rule still applies.