Cleric Class + Crystalline Crawler + Soulmender + Freed from the Real

Cleric Class

Crystalline Crawler

Soulmender

Freed from the Real

How it works

1. Activate Soulmender 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 Freed from the Real's second ability by paying , untapping Soulmender.
5. Repeat.

This clever loop spins up endless life by turning the humble Soulmender into an unstoppable engine, neatly untapping it over and over using the blue mana generated by Crystalline Crawler. The secret glue holding this entire transformation together is Cleric Class, whose replacement effect boosts every single lifegain increment while its Level 2 static ability translates those life bumps directly into fresh +1/+1 counters for Crystalline Crawler. Freed from the Real provides the infinite untapping engine, letting you cycle through blue mana as fast as your heart desires.