Cryptic Trilobite + Light of Promise + Emiel the Blessed + Gray Merchant of Asphodel
Cryptic Trilobite
Light of Promise
Emiel the Blessed
Gray Merchant of Asphodel
Infinite +1/+1 counters on a creatureInfinite blinkingInfinite colorless mana that can only be spent to activate abilitiesInfinite creature ETBInfinite lifegainInfinite lifegain triggersInfinite lifelossInfinite creature LTB
How it works
Activate Emiel by paying 3, blinking Gray Merchant.
Gray Merchant enters the battlefield, causing each opponent to lose life equal to your devotion to black, and causing you to gain life equal to the amount of life lost this way.
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 CCCC that can only be spent to activate abilities.