I built this list around power level, efficiency, format reach, and how much each card influences the way decks get built across Commander, Modern, and Legacy
We saw how powerful Monstrous Rage was with its ability to push damage while invalidating blockers and this seems in a similar vein
You don't even have to be playing Black to run Decadent Dragon, since you can use its treasure to pay for the Adventure side
Frequently Asked Questions How much is Shaymin V worth
The Mirror impacts only Creatures you control
Her ability is twofold, she exiles cards from your opponents library when your Elves or Faeries enter the battlefield, and then she lets you cast spells from that exiled pile for free if you have enough Elves/Faeries to match the mana value