Mirror Sheen, Lava Spike, and Desperate Ritual

Prerequisites

• Mirror Sheen on the battlefield
• Lava Spike in hand
• Desperate Ritual in hand
• Able to produce

Steps

1. Cast Lava Spike, targeting yourself
2. Splice Desperate Ritual onto Lava Spike
3. Hold priority and activate Mirror Sheen, targeting Lava Spike
4. Have the copy of Lava Spike target another player
5. Resolve the copy of Lava Spike
6. Using the RRR from the copy of Lava Spike's text from Desperate Ritual, activate Mirror Sheen, targeting Lava Spike
7. Repeat

Results

• Infinite damage