Fathom Mage + Starving Revenant + Sunbond

Fathom Mage

Starving Revenant

Sunbond

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. Starving Revenant triggers, causing you to gain 1 life and target opponent to lose 1 life.
5. Repeat from step 2.

This clever loop gets its engine running when you enchant Fathom Mage with Sunbond, turning any instance of lifegain into a catalyst that places +1/+1 counters directly onto Fathom Mage. Those incoming counters immediately trigger Fathom Mage's second ability to draw you a card, which in turn awakens Starving Revenant's Descend 8 ability—assuming you have at least eight permanent cards in your graveyard—to drain an opponent and net you life. That resulting lifegain feeds right back into Sunbond to start the whole cycle anew, looping infinitely to churn through your deck, pump Fathom Mage to immense proportions, and drain your opponent's life total to zero.