Cleric Class + Crystalline Crawler + Pemmin's Aura + Overgrown Arch

Cleric Class

Crystalline Crawler

Pemmin's Aura

Overgrown Arch

How it works

1. Activate Overgrown Arch's first ability by tapping it, causing you to gain 2 life.
2. Cleric Class triggers, putting a +1/+1 counter on Crystalline Crawler.
3. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding .
4. Activate Pemmin's Aura's first ability by paying , untapping Overgrown Arch.
5. Repeat.

This delightful engine turns humble life gain into a self-sustaining mana loop by connecting Overgrown Arch's tapping ability with Pemmin's Aura's untapping prowess. To make the math work, Cleric Class steps in with its passive life-boosting and counter-granting abilities, ensuring that every tap of the Arch yields enough life to trigger a +1/+1 counter on Crystalline Crawler. You can then strip that newly minted counter right off the Crawler for a blue mana, which funds Pemmin's Aura to untap the Arch and keep the entire cycle spinning indefinitely.