Emiel the Blessed + Boulderbranch Golem + Cryptic Trilobite + Light of Promise
Emiel the Blessed
Boulderbranch Golem
Cryptic Trilobite
Light of Promise
Infinite +1/+1 counters on a creatureInfinite blinkingInfinite colorless mana that can only be spent to activate abilitiesInfinite creature ETBInfinite creature LTB
How it works
Activate Emiel by paying 3, blinking Boulderbranch Golem.
Boulderbranch Golem enters the battlefield, causing you to gain six life.
Cryptic Trilobite triggers, putting six +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.