Cryptic Trilobite enters the battlefield with at least three +1/+1 counters due to Master Biomancer.
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.