Infinite colorless mana that can only be spent to activate abilitiesInfinite death triggersInfinite creature ETBInfinite creature LTB
How it works
Activate Cryptic Trilobite by removing a +1/+1 counter from it, adding CC that can only be spent to activate abilites.
Repeat step 1 until Cryptic Trilobite dies as a state-base action due to having zero or less toughness.
Othelm triggers, untapping itself.
Activate Othelm by paying 2 and tapping it, returning Cryptic Trilobite from your graveyard to the battlefield tapped with at least two +1/+1 counters on it.