Activate Emiel by paying ({3} magic symbol) , blinking Aragorn and Arwen.
When Aragorn and Arwen enters the battlefield, it triggers, putting a +1/+1 counter on each other creature you control and gain 1 life for each other creature you control.
Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding ({C} magic symbol) ({C} magic symbol) that can only be spent to activate abilities.
Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding ({1} magic symbol) .
Repeat.
Results
Infinite +1/+1 counters on each creature you control except Aragorn and Arwen, Crystalline Crawler, and Cryptic Trilobite.