Panharmonicon + Horned Kavu + Burning-Tree Emissary + Impact Tremors

Panharmonicon

Horned Kavu

Burning-Tree Emissary

Impact Tremors

How it works

1. Cast Burning-Tree Emissary by paying R/GR/G.
2. Burning-Tree Emissary and Impact Tremors trigger twice each.
3. Resolve both Burning-Tree Emissary triggers, adding .
4. Resolve both Impact Tremors triggers, deals 2 damage to each opponent.
5. Cast Horned Kavu by paying .
6. Horned Kavu and Impact Tremors trigger twice each.
7. Resolve both Horned Kavu triggers, returning Horned Kavu and Burning-Tree Emissary to your hand.
8. Resolve both Impact Tremors triggers, deals 2 damage to each opponent.
9. Repeat.