Ertha Jo, Frontier Mentor + Clock of Omens + Pheres-Band Tromper + Mycosynth Lattice

Ertha Jo, Frontier Mentor

Clock of Omens

Pheres-Band Tromper

Mycosynth Lattice

How it works

1. Activate Clock of Omens by tapping it and Pheres-Band Tromper, targeting Pheres-Band Tromper.
2. Ertha Jo triggers, copying Clock of Omens' ability, targeting Clock of Omens.
3. Resolve both Clock of Omens abilities, untapping it and Pheres-Band Tromper.
4. Pheres-Band Tromper triggers, putting a +1/+1 counter on it.
5. Repeat.

This clever loop relies on Mycosynth Lattice to turn every permanent on the battlefield into an artifact, allowing Clock of Omens to target creatures just as easily as metal. By tapping Clock of Omens and Pheres-Band Tromper to pay the Clock's cost, you initiate an ability targeting a permanent, which immediately invites Ertha Jo, Frontier Mentor to double the trigger. The original and copied activations resolve to untap both the Clock and the Tromper, while the Tromper's inspired ability triggers to reward its un-tapping with a permanent +1/+1 counter. You can repeat this sequence as many times as you like, ending with an infinitely massive creature fueled entirely by artifact synergy and triggered copy magic.