Experiment Kraj + Simic Ascendancy + Pili-Pala + Crystalline Crawler

Experiment Kraj

Simic Ascendancy

Pili-Pala

Crystalline Crawler

How it works

1. Activate Kraj by tapping it, putting a +1/+1 counter on Pili-Pala.
2. Simic Ascendancy triggers, putting a growth counter on itself.
3. Activate Kraj using Pili-Pala's ability by paying 2 and untapping Kraj, adding 1.
4. Activate Kraj using its own ability by tapping it, putting a +1/+1 counter on itself.
5. Simic Ascendancy triggers, putting a growth counter on itself.
6. Activate Kraj using Crystalline Crawler's first ability by removing a +1/+1 counter from Kraj, adding 1.
7. Repeat from step 3 an arbitrarily large number of times.
8. At the beginning of your next upkeep, Simic Ascendancy triggers, causing you to win the game.