Kurkesh, Onakke Ancient, Chromatic Orrery, Manifold Key, and Sonic Screwdriver

Prerequisites

• Kurkesh, Onakke Ancient on the battlefield
• Chromatic Orrery on the battlefield
• Manifold Key on the battlefield
• Sonic Screwdriver on the battlefield

Steps

1. Activate Chromatic Orrery's first ability by tapping it, adding
2. Activate Manifold Key's first ability by paying and tapping it, targeting Chromatic Orrery
3. Kurkesh triggers, causing you to pay to copy Manifold Key's ability, targeting Sonic Screwdriver
4. Resolve both Manifold Key abilities, untapping Chromatic Orrery and Sonic Screwdriver
5. Activate Chromatic Orrery's first ability by tapping it, adding
6. Activate Sonic Screwdriver's second ability by paying and tapping it, targeting Chromatic Orrery
7. Kurkesh triggers, causing you to pay to copy Sonic Screwdriver's ability, targeting Manifold Key
8. Resolve both Sonic Screwdriver abilities, untapping Chromatic Orrery and Manifold Key
9. Repeat
10. Once you have infinite mana, you may activate Chromatic Orrery's second ability instead

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite card draw
• Infinite draw triggers
• Infinite untap of artifacts you control