japanese pokemon card charizard ex #66 Ruler of the Black Flame cementing its place as a must Amazon.com: Pokemon Card Charizard V

Whenever you discard a creature card, you can pay one blue and two generic mana, to create a tapped token copy of the card that's a 4/4 black zombie

Creature = A creature, duh

This way, you can sacrifice another creature you may have stolen earlier to pay this enchantments cost instead of sacrificing some of your valuable setup creatures

Necron DynastiesThe Necrons are a race of android warriors clad in self-repairing living metal

Im glad this is restricted to tapping flyers, because otherwise it would be an instant staple

They're exiled at the end of the turn, but you get a leaving-the-graveyard trigger, an ETB trigger, and a leaves-play trigger