Herd Baloth + Sunbond + Hinterland Sanctifier

Herd Baloth

Sunbond

Hinterland Sanctifier

How it works

1. Gain life.
2. Sunbond 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, Hinterland Sanctifier triggers, causing you to gain 1 life.
5. Repeat from step 2.

This loop transforms a single instance of lifegain into a self-sustaining engine by turning healing into an expanding army. With Sunbond enchanting Herd Baloth, every time you gain life, the enchantment translates it into +1/+1 counters on the Baloth, which in turn causes the Baloth to spawn a 4/4 Beast token. That new token entering the battlefield triggers Hinterland Sanctifier to gain you 1 life, looping right back into Sunbond to repeat the entire process indefinitely.