Ertha Jo, Frontier Mentor + Clock of Omens + Kragma Butcher + Memnarch

Ertha Jo, Frontier Mentor

Clock of Omens

Kragma Butcher

Memnarch

How it works

1. Activate Memnarch by paying 1, 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.