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

WUBR identity

Commander legal

The 4 combo pieces

• Clock of Omens
• Encroaching Mycosynth
• Ertha Jo, Frontier Mentor
• Siren of the Silent Song

How to execute it

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.

What the combo produces

• Infinite mill