Delina, Wild Mage, Dockside Extortionist, and Hellkite Charger

Prerequisites

• Delina, Wild Mage on the battlefield
• Dockside Extortionist on the battlefield
• Hellkite Charger on the battlefield
• Opponents control at least eight artifacts and/or enchantments
• Delina and Hellkite Charger does not have summoning sickness
• An opponent is unable to block and kill Delina and Hellkite Charger

Steps

1. Declare Delina and Hellkite Charger as attackers, triggering their abilities
2. Resolve the Delina trigger, creating at least one token copy of Dockside Extortionist that is tapped and attacking
3. The Dockside Extortionist token(s) enter the battlefield, creating at least eight Treasure tokens
4. Activate seven Treasure tokens by tapping and sacrificing them, adding
5. Resolve the Hellkite Charger trigger from step 1, causing you to pay to untap all attacking creatures you control and to get an additional combat phase after this one
6. At the end of your combat phase, the Dockside Extortionist token triggers, exiling itself
7. Repeat each combat phase

Results

• Infinite colored mana
• Infinite combat phases
• Infinite ETB
• Infinite LTB
• Infinite Treasure tokens