If you dont its a fantastic addition to your EDH collection
If Your Deck Is Built Around Milling In a dedicated mill deck, milling is, of course, appropriate
Legendary Creature - Human Knight Color tag templates(None) Ethercaste Knight Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) Creature Artifact - Human Knight Color tag templates(None) Frilled Mystic Flash When this creature enters, you may counter target spell
Thats why it yields the name 'Penny sleeve'
youll just sacrifice the initial body so that the new one can trigger, satisfying the only once rule
3 Zada, Hedron Grinder Zada is like a Radiate on a stick, and since you can build around her, you have the needed flexibility to make her work from multiple angles