Yannik leaves the battlefield, all creatures exiled with it return to the battlefield.
When
Yannik enters the battlefield, it triggers, exiling another creature you control with power two or greater and putting at least two +1/+1 counters on
Cryptic Trilobite.
Activate
Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) ({C} magic symbol) that can only be spent to activate abilities.
Repeat.
Results
Infinite blinking.
Infinite colorless mana that can only be spent to activate abilities.