Vigor + Conclave Mentor + Walking Ballista

Prerequisites

• Walking Ballista has a +1/+1 counter on it.

Steps

1. 1Activate Walking Ballista by removing a +1/+1 counter on it, targeting itself, but putting two +1/+1 counters on it due to Vigor.
2. 2Activate Walking Ballista by removing a +1/+1 counter on it, dealing 1 damage to any target.
3. 3Repeat.

Effects

• Infinite +1/+1 counters on creatures you control
• Infinite damage