When Supply Runners enters the battlefield, it and Deadeye Navigator's soulbond ability trigger.
Resolve the Deadeye Navigator trigger, repairing it and Supply Runners.
Resolve the Supply Runners trigger, putting a +1/+1 counter on each other creature you control.
Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding ({U} magic symbol) .
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.
Repeat.
Results
Infinite +1/+1 counters on all creatures you control except Crystalline Crawler and Supply Runners.
Infinite colorless mana that can only be spent to activate abilities.