Volcano Hellion, and Vito, Thorn of the Dusk Rose

Prerequisites

• Volcano Hellion in hand
• Vito, Thorn of the Dusk Rose on the battlefield
• available

Steps

1. Cast Volcano Hellion by paying
2. When Volcano Hellion enters the battlefield, it triggers
3. Holding priority, activate Vito by paying , giving creatures you control lifelink until end of turn
4. Resolve the Volcano Hellion trigger, dealing an arbitrarily large amount of damage to you and Volcano Hellion, and causing you to gain life equal to the damage dealt this way
5. Vito triggers, dealing damage to target opponent equal to the life you gained

Results

• Infinite lifegain
• Infinite lifeloss for target opponent