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.
Cryptic Trilobite triggers, putting at least two +1/+1 counters on itself.
Activate
Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding that can only be spent to activate abilities.
Repeat.
Results
Infinite +1/+1 counters on a creature.
Infinite blinking.
Infinite colorless mana that can only be spent to activate abilities.
Infinite creature ETB.
Infinite lifegain.
Infinite lifegain triggers.
Infinite lifeloss.
Infinite creature LTB.
Metadata
Bracket tag
ExhibitionBracket 1+
For any deck
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1 · Exhibition5 · cEDH
Bracket tags are estimated from the cards and results of each combo, as a guideline rather than a strict classification.