Cryptic Trilobite + Light of Promise + Eldrazi Displacer + Gray Merchant of Asphodel

Cryptic Trilobite

Light of Promise

Eldrazi Displacer

Gray Merchant of Asphodel

How it works

1. Activate Eldrazi Displacer by paying 2C, blinking Gray Merchant of Asphodel.
2. When Gray Merchant of Asphodel enters the battlefield, it triggers, causing each opponent to lose life equal to your devotion to black, and causing you to gain that much life.
3. Cryptic Trilobite triggers, putting at least two +1/+1 counters on itself.
4. Activate Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding CCCC that can only be spent to activate abilities.
5. Repeat.

This cunning loop relies on Light of Promise to turn life gain into rapid growth, enchanting a creature so that every blink of Gray Merchant of Asphodel translates its entry into a massive surge of life and matching +1/+1 counters. Those counters are the lifeblood of the engine, as Cryptic Trilobite uses them as a resource to generate the exact colorless mana needed to feed Eldrazi Displacer's activation cost. By continually flickering the Merchant back and forth, you generate infinite life, drain your opponents down to nothing, and fuel an endless cycle of ability-locked mana and counters.