Rite of Passage, Walking Ballista, and Mirage Mirror

Prerequisites

• Rite of Passage on the battlefield
• Walking Ballista on the battlefield
• Mirage Mirror on the battlefield
• available

Steps

1. Activate Mirage Mirror by paying , causing it to become a copy of Rite of Passage until end of turn
2. Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to itself
3. Rite of Passage and Mirage Mirror trigger, putting two +1/+1 counters on Walking Ballista
4. Repeat from step 2 an arbitrarily large number of times
5. Move to the next turn, removing all damage marked on Walking Ballista
6. Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to any target
7. Repeat step 6 as desired

Results

• Infinite damage
• Infinite +1/+1 counters