Esika's Chariot, There and Back Again, and Hellkite Charger

Prerequisites

• Esika's Chariot on the battlefield
• There and Back Again on the battlefield
• Hellkite Charger on the battlefield
• There and Back Again has exactly two lore counters on it
• An opponent cannot block and kill Esika's Chariot or Hellkite Charger

Steps

1. At the beginning of your precombat main phase, There and Back Again triggers, putting a lore counter on it
2. There and Back Again's third chapter ability triggers, creating a legendary 6/6 Smaug creature token and causing you to sacrifice There and Back Again
3. Activate Esika's Chariot's crew ability by tapping the Smaug token, causing Esika's Chariot to become an artifact creature until end of turn
4. Declare Esika's Chariot and Hellkite Charger as attackers, triggering their abilities
5. Resolve the Esika's Chariot's trigger, creating a copy of the Smaug token
6. Put either Smaug token into your graveyard due to the legend rule
7. When the Smaug token dies, it triggers, creating fourteen Treasure tokens
8. Activate seven Treasures by tapping and sacrificing them, adding
9. Resolve the Hellkite Charger trigger, causing you to pay to untap all attacking creatures and to get an additional combat phase after this one
10. Repeat from step 4 each combat phase

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite death triggers
• Infinite combat phases
• Infinite untap of creatures you control
• Infinite mana creatures you control can produce
• Infinite Treasure tokens
• Infinite copies of tokens you control