Agatha of the Vile Cauldron + Cryptolith Rite + Devoted Druid + Cinderhaze Wretch

Agatha of the Vile Cauldron

Cryptolith Rite

Devoted Druid

Cinderhaze Wretch

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 Devoted Druid and Cinderhaze Wretch by tapping them, adding .
3. Activate Devoted Druid and Cinderhaze Wretch's second abilities by putting a -1/-1 counter on them, untapping them.
4. Repeat.

This clever engine transforms simple untap quirks into a devastating loop, fueled by Agatha of the Vile Cauldron reducing the activation costs of creature abilities based on her power. Cryptolith Rite gives your creatures the crucial ability to tap for mana, letting Devoted Druid and Cinderhaze Wretch generate the exact resources needed while continuously untapping themselves with their own -1/-1 counter abilities. Because Agatha of the Vile Cauldron's pump ability can be repeatedly activated and costs less thanks to her own cost-reduction magic, you can cycle this loop indefinitely to grant your entire team infinite power, toughness, trample, and haste.