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

Ertha Jo, Frontier Mentor

Clock of Omens

Siren of the Silent Song

Biotransference

How it works

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

This intricate loop turns a simple clockwork mechanism into an endless engine of ruin, beginning with Biotransference ensuring that Siren of the Silent Song counts as an artifact alongside its creature nature. By tapping both Clock of Omens and the Siren to pay the Clock's cost, you target the Siren to untap it, which simultaneously triggers the inspired ability of Siren of the Silent Song to strip cards from your opponents' hands and libraries. Meanwhile, Ertha Jo, Frontier Mentor watches for that activated ability targeting a creature and springs into action, copying the Clock of Omens' ability to untap the Clock itself. Because both pieces untap in the process, you can repeat this sequence indefinitely to mill your opponents out of the game.