Light of Promise + Soul's Attendant + Herd Baloth

Light of Promise

Soul's Attendant

Herd Baloth

How it works

1. Gain life.
2. Light of Promise triggers, putting a +1/+1 counter on Herd Baloth.
3. Herd Baloth triggers, creating a creature token.
4. When the creature token enters the battlefield, Soul's Attendant triggers, causing you to gain 1 life.
5. Repeat from step 2.

This charming loop spins completely out of control the moment you can spark a single instance of lifegain. With Herd Baloth enchanted by Light of Promise, any incoming life pumps the Baloth with +1/+1 counters, which in turn triggers its ability to birth a 4/4 green Beast token. That new token arrival immediately rouses Soul's Attendant to hand you back 1 life, looping the entire sequence right back into Light of Promise for infinite tokens, endless counters, and boundless life.