Ertha Jo, Frontier Mentor + Clock of Omens + Siren of the Silent Song + Memnarch

Ertha Jo, Frontier Mentor

Clock of Omens

Siren of the Silent Song

Memnarch

How it works

1. Activate Memnarch by paying 1, causing Siren of the Silent Song to become an artifact.
2. Activate Clock of Omens by tapping it and Siren of the Silent Song, targeting Siren of the Silent Song.
3. Ertha Jo triggers, copying Clock of Omens' ability, targeting Clock of Omens.
4. Resolve both Clock of Omens abilities, untapping it and Siren of the Silent Song.
5. Siren of the Silent Song triggers, causing each opponent to discard and mill a card.
6. Repeat from step 2.

This clever loop transforms Memnarch into a master artisan, turning Siren of the Silent Song into an artifact so it can participate in a mechanical tango with Clock of Omens. When you tap Clock of Omens and the newly minted artifact Siren of the Silent Song to untap the Siren, Ertha Jo, Frontier Mentor steps in as the ultimate conductor: because the clock's ability targets a creature, Ertha Jo copies it so you can simultaneously untap the clock itself. As Siren of the Silent Song untaps, its inspired ability triggers to shred your opponents' hands and libraries, allowing you to repeat the cycle indefinitely for an infinite mill win.