Spike Feeder and Cryptic Trilobite have at least two +1/+1 counters.
Steps
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 Spike Feeder's second ability by removing a +1/+1 counter from it, causing you to gain two life.
Lisette triggers, causing you to pay ({1} magic symbol) to put a +1/+1 counter on each creature you control.
Repeat.
Results
Infinite +1/+1 counters on all creatures you control except Spike Feeder.
Infinite colorless mana that can only be spent to activate abilities.