Vigor + Triskelion + Loading Zone

Vigor

Triskelion

Loading Zone

How it works

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

This cunning loop relies on Triskelion’s ability to ping itself, which normally would whittle its own health away until it perishes. However, Vigor steps in to replace that self-inflicted damage with a bounty of +1/+1 counters instead, saving the construct while fueling its ammunition supply. To supercharge this engine, Loading Zone doubles every single counter placed on your creatures, turning Vigor's prevention replacement effect into a net-positive growth spurt. This lets you generate infinite +1/+1 counters and direct infinite damage to any target you choose.