Rite of Passage + Hardened Scales + Walking Ballista

Prerequisites

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Steps

1. 1Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to itself.
2. 2Rite of Passage triggers, putting two +1/+1 counters on Walking Ballista.
3. 3Repeat an arbitrarily large number of times.
4. 4Move to the next turn, removing all damage marked on Walking Ballista.
5. 5Activate Walking Ballista by removing a +1/+1 counter from it, dealing 1 damage to any target.
6. 6Repeat step 5 as desired.

Effects

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