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 {C}{C}{C}{C} that can only be spent to activate abilities.
Repeat.

Infinite +1/+1 counters on a creature

Infinite blinking

Infinite colorless mana that can only be spent to activate abilities

Infinite creature ETB

Infinite creature LTB

Emiel the Blessed

Boulderbranch Golem

Cryptic Trilobite

Sunbond

Light of Promise

Activate Emiel by paying {3}, blinking Boulderbranch Golem.
Boulderbranch Golem enters the battlefield, causing you to gain six life.
Crystalline Crawler triggers, putting six +1/+1 counters on itself.
Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding {3}.
Repeat.

Infinite colored mana

Crystalline Crawler

Activate Audacious Reshapers by tapping it and sacrificing Boulderbranch Golem.
When Boulderbranch Golem dies, Mortuary triggers, putting Boulderbranch Golem on top of your library from your graveyard.
Resolve the Audacious Reshapers ability, revealing Boulderbranch Golem from the top of your library, then putting it onto the battlefield and dealing 1 damage to you.
When Boulderbranch Golem enters the battlefield, it and Intruder Alarm trigger.
Resolve the Intruder Alarm trigger, untapping all creatures.
Resolve the Boulderbranch Golem trigger, causing you to gain life equal to its power.
Repeat.

Combos with "Boulderbranch Golem"