Archangel of Thune + Crystalline Crawler + Pemmin's Aura + Gnostro, Voice of the Crags

Archangel of Thune

Crystalline Crawler

Pemmin's Aura

Gnostro, Voice of the Crags

How it works

1. Activate Gnostro by tapping it, causing you to gain life.
2. Archangel of Thune triggers, putting a +1/+1 counter on each creature you control.
3. Activate Crystalline Crawler ability by removing a +1/+1 counter from it, adding .
4. Activate Pemmin's Aura's ability by paying , untapping Gnostro.
5. Repeat.

This clever engine turns Gnostro, Voice of the Crags into an eternal fountain of life by tapping it to trigger its lifegain mode. Every time you gain life, Archangel of Thune steps in with its passive trigger to scatter a +1/+1 counter onto every creature you control, keeping your board steadily growing. Crystalline Crawler happily feeds on those counters, converting them into blue mana to fund Pemmin's Aura, whose untap ability refreshes Gnostro to repeat the whole loop indefinitely.