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Legendary Creature - Wizard Zombie Recursion (CTRL to add secondary) Removal Ertai Resurrected Flash When Ertai Resurrected enters, choose up to one Counter target spell, activated ability, or triggered ability

Card Set(s) -PARAMOUNT WAR- [OP02] CARD VIEW ST04-003 | SR | CHARACTER Kaido Attribute Strike Block icon 1 Type The Four Emperors/Animal Kingdom Pirates Effect [On Play] DON

Going by the title, it sounds like all of these cards were infact created by a Smeargle

One useful tip I can give you is that it's better with "Alviss of the Nordic Alfar" effect to discard from deck the most useless Nordic monsters (most of the times the level 4 and some level 3 beast-type cards)

The only real cost is that you need to feed Contamination by sacrificing a creature during your upkeep to keep the effect going