Agatha's Soul Cauldron + Myojin of Towering Might + Tekuthal, Inquiry Dominus + Cryptic Trilobite

Agatha's Soul Cauldron

Myojin of Towering Might

Tekuthal, Inquiry Dominus

Cryptic Trilobite

How it works

1. Activate Tekuthal using Myojin of Towering Might's ability by removing an indestructible counter from it, putting five +1/+1 counters on Cryptic Trilobite, and three +1/+1 counters on any creature you control.
2. Activate Cryptic Trilobite's first ability twice by removing two +1/+1 counters from it, adding CCCC that can only be spent to activate abilities.
3. Activate Tekuthal by paying 3 and removing three +1/+1 counters from Cryptic Trilobite, putting an indestructible counter on it.
4. Repeat.

This intricate loop comes together through Agatha's Soul Cauldron, which allows your creatures with +1/+1 counters to inherit the activated abilities of any creature cards exiled within it. By feeding Myojin of Towering Might into the Cauldron, you grant Cryptic Trilobite the ability to distribute massive bursts of +1/+1 counters, which fuel the Trilobite's own mana-producing ability. Meanwhile, Tekuthal, Inquiry Dominus stands ready to supercharge your counter manipulation and protect your key pieces by converting those accumulated resources into indestructible counters.