Ertha Jo, Frontier Mentor + Clock of Omens + Kragma Butcher + Liquimetal Coating

Ertha Jo, Frontier Mentor

Clock of Omens

Kragma Butcher

Liquimetal Coating

How it works

1. Activate Liquimetal Coating by tapping it, causing Kragma Butcher to become an artifact.
2. Activate Clock of Omens by tapping it and Kragma Butcher, targeting Kragma Butcher.
3. Ertha Jo triggers, copying Clock of Omens' ability, targeting Clock of Omens.
4. Resolve both Clock of Omens abilities, untapping it and Kragma Butcher.
5. Kragma Butcher triggers, giving it +2/+0 until end of turn.
6. Repeat from step 2.

This clever loop turns Clock of Omens and Liquimetal Coating into an engine of perpetual motion by temporarily turning Kragma Butcher into an artifact so it can help pay the Clock's tapping cost. Every time you activate the Clock targeting the Butcher, Ertha Jo, Frontier Mentor notices that the ability targeted a creature and generously copies it, allowing you to untap both the Butcher and the Clock simultaneously. As this mechanical dance repeats, the inspired ability of Kragma Butcher triggers with every untap to continuously stack up massive power until it's an infinitely lethal threat.