Grand Warlord Radha, and Hellkite Charger

Prerequisites

• Grand Warlord Radha on the battlefield
• Hellkite Charger on the battlefield
• You control at least six other creatures that can attack this turn
• An opponent is unable to block and kill your creatures

Steps

1. Declare Radha, Hellkite Charger and at least six other creatures as attackers
2. Radha and Hellkite Charger trigger
3. Resolve the Radha trigger, adding at least
4. Resolve the Hellkite Charger trigger, choosing to pay to untap all attacking creatures and to get an additional combat phase after this one
5. Repeat

Results

• Infinite combat phases
• Infinite green mana
• Infinite red mana