Grove of the Burnwillows + Pili-Pala + Marvin, Murderous Mimic + Tainted Remedy + Natural Affinity

Grove of the Burnwillows

Pili-Pala

Marvin, Murderous Mimic

Tainted Remedy

Natural Affinity

How it works

1. Activate Marvin using Grove of the Burnwillows' second ability by tapping it, adding or and causing each opponent to lose 1 life due to Tainted Remedy.
2. Activate Marvin using Pili-Pala's ability by paying 2 and untapping it, adding 1.
3. Repeat.