Agatha of the Vile Cauldron + Umbral Mantle + Paradise Mantle

Agatha of the Vile Cauldron

Umbral Mantle

Paradise Mantle

How it works

1. Activate the creature with Umbral Mantle and Paradise Mantle attached by tapping it, adding 1.
2. Activate the creature by paying 1 due to Agatha of the Vile Cauldron and untapping it, giving itself +2/+2 until end of turn.
3. Repeat.

This engine turns a humble mana dink into an unstoppable juggernaut by exploiting the clever cost reduction of Agatha of the Vile Cauldron, which drops Umbral Mantle's untap ability down to just one mana. Equipping Paradise Mantle gives your creature the ability to tap for the exact mana needed to pay for that discounted untap step, creating a closed-loop exchange where tapping yields the mana required to untap and grow. Because Umbral Mantle grants a permanent power boost each iteration, every cycle increases the creature's size—and thanks to Agatha's reduction applying to its own cost as well, this loop can spin out of control until you hold an infinitely massive creature ready to trample over any opposition.