Rionya, Fire Dancer, Reckless Barbarian, and Hellkite Charger

Prerequisites

• Rionya, Fire Dancer on the battlefield
• Reckless Barbarian on the battlefield
• Hellkite Charger on the battlefield
• Hellkite Charger does not have summoning sickness
• You have cast at least three instants and/or sorceries this turn
• An opponent is unable to block and kill Hellkite Charger

Steps

1. At the beginning of your combat phase, Rionya triggers, creating at least four copies of Reckless Barbarian with haste
2. Declare Hellkite Charger as an attacker, attacking an opponent unable to block and kill it, triggering its ability
3. Holding priority, activate four Reckless Barbarian tokens by sacrificing them, adding eight
4. Resolve the Hellkite Charger ability, causing you to pay to untap all attacking creatures and to get an additional combat phase after this one
5. Repeat

Results

• Infinite combat phases
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers