Mirror Sheen, Lava Spike, and Desperate Ritual

Prerequisites

• Mirror Sheen on the battlefield
• Lava Spike in hand
• Desperate Ritual in hand
• available

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
8. Cast Lava Spike by paying its mana cost, targeting yourself
9. Holding priority, cast Desperate Ritual by paying its splice cost, adding its effects onto Lava Spike
10. Holding priority, activate Mirror Sheen by paying , copying Lava Spike, which also has the effects of Desperate Ritual, targeting an opponent
11. Resolve Lava Spike, dealing damage to an opponent and adding
12. Repeat from step 3

Results

• Infinite magecraft triggers
• Infinite damage