Strength of Will + Walking Ballista + Benevolent Hydra

Prerequisites

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Steps

1. 1Cast Strength of Will by paying , targeting Walking Ballista.
2. 2Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to it.
3. 3Walking Ballista triggers, putting two +1/+1 counters on it due to Benevolent Hydra.
4. 4Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to any target.
5. 5Repeat from step 2.

Effects

• Infinite +1/+1 counters on a creature
• Infinite damage