Gandalf the White, Ancestral Statue, Clock of Omens, and Astral Cornucopia

Prerequisites

• Gandalf the White on the battlefield
• Ancestral Statue in hand
• Clock of Omens on the battlefield
• Astral Cornucopia on the battlefield
• undefined

Steps

1. Activate Astral Cornucopia by tapping it, adding at least
2. Cast Ancestral Statue by paying
3. When Ancestral Statue enters the battlefield, it triggers twice
4. Holding priority, activate Clock of Omens by tapping the nontoken noncreature artifact and Ancestral Statue, untapping Astral Cornucopia
5. Resolve both Ancestral Statue triggers, returning it and the nontoken noncreature artifact to your hand
6. Cast the noncreature artifact by paying its mana cost
7. Repeat
8. If the noncreature artifact has a mana value less than the number of charge counters on Astral Cornucopia minus four, this combo nets infinite colored mana

Results

• Infinite colored mana
• Infinite ETB
• Infinite LTB
• Infinite storm count