Ertha Jo, Frontier Mentor, Clock of Omens, Sphinx's Disciple, and Liquimetal Coating

Prerequisites

• Ertha Jo, Frontier Mentor on the battlefield
• Clock of Omens on the battlefield
• Sphinx's Disciple on the battlefield
• Liquimetal Coating on the battlefield

Steps

1. Activate Liquimetal Coating by tapping it, causing Sphinx's Disciple to become an artifact
2. Activate Clock of Omens by tapping it and Sphinx's Disciple, targeting Sphinx's Disciple
3. Ertha Jo triggers, copying Clock of Omens' ability, targeting Clock of Omens
4. Resolve both Clock of Omens abilities, untapping it and Sphinx's Disciple
5. Sphinx's Disciple triggers, causing you to draw a card
6. Repeat from step 2

Results

• Infinite card draw
• Infinite draw triggers