Phylath, World Sculptor + Fertilid + Crystalline Crawler + Ancient Greenwarden + Arcane Adaptation

Phylath, World Sculptor

Fertilid

Crystalline Crawler

Ancient Greenwarden

Arcane Adaptation

How it works

1. Activate Fertilid by paying 1 and removing a +1/+1 counter from it, causing you to search your library for a basic land card and put it onto the battlefield tapped.
2. When the land enters the battlefield, Phylath's second ability triggers twice, putting four +1/+1 counters on Fertilid and Crystalline Crawler.
3. Activate Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding 1.
4. Repeat.