Jugan, the Rising Star + Nim Deathmantle + Crystalline Crawler + Goblin Bombardment

Jugan, the Rising Star

Nim Deathmantle

Crystalline Crawler

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Jugan.
2. Jugan dies, triggering itself and Nim Deathmantle.
3. Resolve the Jugan trigger, putting five +1/+1 counters on Crystalline Crawler.
4. Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding 3.
5. Resolve the Nim Deathmantle trigger from step 2, causing you to pay 4 to return Jugan from your graveyard to the battlefield, and attach Nim Deathmantle to it.
6. Resolve the Goblin Bombardment ability from step 1, dealing 1 damage to any target.
7. Repeat.