Hellkite Charger, and Sword of Feast and Famine

Prerequisites

• Hellkite Charger on the battlefield
• Sword of Feast and Famine on the battlefield
• Sword of Feast and Famine attached to Hellkite Charger
• You control lands that can produce at least
• Opponents cannot block Hellkite Charger

Steps

1. Declare Hellkite Charger as an attacker
2. Hellkite Charger triggers
3. In response, activate lands you control by tapping them, adding at least
4. Resolve Hellkite Charger's trigger, paying to gain an extra combat phase and untap all attacking creatures you control
5. When Hellkite Charger deals combat damage, Sword of Feast and Famine triggers, untapping all lands you control and causing the defending player to discard a card
6. Repeat

Results

• Infinite combat damage
• Infinite combat phases
• Infinite damage
• Infinite untap of lands you control
• Your opponents discard their hands
• Infinite mana lands you control can produce