Fathom Mage + Light of Promise + Sheoldred, the Apocalypse

Fathom Mage

Light of Promise

Sheoldred, the Apocalypse

How it works

1. Gain life.
2. Fathom Mage triggers, putting a +1/+1 counter on itself
3. Fathom Mage triggers, causing you to draw a card.
4. Sheoldred triggers, causing you to gain 2 life.
5. Repeat from step 2.

This wondrous loop begins when you trigger Light of Promise, placing a +1/+1 counter on Fathom Mage and setting off its evolve-style growth mechanism to draw you a card. That newly drawn card immediately awakens Sheoldred, the Apocalypse, who rewards your thirst for knowledge with a lifesaving 2 life. Because you just gained life, Light of Promise triggers once more, dropping another counter onto Fathom Mage to restart this magnificent, self-sustaining cycle of endless cards, endless life, and ever-growing power.