Deepglow Skate enters the battlefield, doubling the number of 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 +1/+1 counters on Cryptic Trilobite.
Infinite blinking.
Infinite colorless mana that can only be used to activate abilities.