Myojin of Towering Might in exile (Myojin of Towering Might exiled by Agatha's Soul Cauldron).
All other permanents on the battlefield.
Tekuthal has at least one indestructible counter on it, and at least one +1/+1 counter on it.
Steps
Activate Tekuthal using Myojin of Towering Might's ability by removing an indestructible counter from it, putting six +1/+1 counters on Crystalline Crawler, and two +1/+1 counters on any creature you control.
Activate Crystalline Crawler's first ability three times by removing three +1/+1 counters from it, adding ({3} magic symbol) .
Activate Tekuthal by paying ({3} magic symbol) and removing three +1/+1 counters from Crystalline Crawler, putting an indestructible counter on it.