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So keep it safe and perhaps, in the future, you can dig this card up again and watch it spike.

They may be forced to rely more heavily on Mega Gardevoir ex for energy acceleration, yet using a turn to attack to accelerate energies is not exactly an apt replacement for doing so on a whim from your discard whenever and however you want

The only problem with Magus of the Mirror is its cost, at 6 mana, and its lack of immediate impact on the board, since it needs to wait a turn before it can tap and activate

Raiza The Mega Monarch can send cards from the field back into your opponents hand, Floowandeereze Empen is used to negate the effect of opponents monsters, and Mist Valley Avian Apex is used to negate any effect that you dont want your opponent to activate, making it an incredible omni-negate tool to have on hand at any given time

If it's good in EDH and from Wilds of Eldraine, you'll find it here