Crystalline Crawler + Gideon's Sacrifice + Vigor + Warmonger

Crystalline Crawler

Gideon's Sacrifice

Vigor

Warmonger

How it works

1. Cast Gideon's Sacrifice by paying , causing all damage that would be dealt this turn to you or to permanents you control to be dealt to Crystalline Crawler instead.
2. Cast Warmonger by paying 3.
3. Activate Warmonger by paying 2, dealing 1 damage to each creature without flying and each player.
4. Gideon's Sacrifice redirects damage to Crawler, which results in at least four +1/+1 counters being placed on it instead due to Vigor.
5. Activate Crystalline Crawler's first activated ability at least twice by removing at least two +1/+1 counters from it, adding at least 2.
6. Repeat from step 3.