Hornet Nest + Warstorm Surge

Hornet Nest

Warstorm Surge

How it works

1. Give Hornet Nest indestructible by any method.
2. Deal damage to Hornet Nest.
3. Hornet Nest triggers, creating at least one 1/1 Insect creature token.
4. The Insect enters the battlefield, triggering Warstorm Surge, causing the Insect to deal one damage to Hornet Nest.
5. Repeat from step 3.