Agatha of the Vile Cauldron + Cryptolith Rite + Cinderhaze Wretch + Barrenton Medic

Agatha of the Vile Cauldron

Cryptolith Rite

Cinderhaze Wretch

Barrenton Medic

How it works

1. Activate Agatha of the Vile Cauldron by paying , giving all other creatures you control +1/+1, trample and haste until end of turn.
2. Activate Cinderhaze Wretch and Barrenton Medic by tapping them, adding .
3. Activate Cinderhaze Wretch and Barrenton Medic's second abilities by putting a -1/-1 counter on them, untapping them.
4. Repeat.

By leveraging Agatha of the Vile Cauldron's cost-reducing power, the untap abilities of both Cinderhaze Wretch and Barrenton Medic—normally fueled by placing a -1/-1 counter—are reduced in cost so that they can be activated continuously using the mana generated by Cryptolith Rite. Each time you tap Cinderhaze Wretch and Barrenton Medic for mana thanks to Cryptolith Rite's granting ability, you can immediately untap them using their own -1/-1 counter abilities, creating a self-sustaining loop. This engine generates infinite mana of any color and pumps up your creatures infinitely through repeated activations of Agatha of the Vile Cauldron's pump ability, overwhelming your opponents in a flash.