Lost Jitte + Karn's Bastion + Cryptic Trilobite + Crystalline Crawler + Gemstone Array

Lost Jitte

Karn's Bastion

Cryptic Trilobite

Crystalline Crawler

Gemstone Array

How it works

1. Activate Karn's Bastion by paying 4, putting a charge counter on Lost Jitte and Gemstone Array, and a +1/+1 counter on Cryptic Trilobite and Crystalline Crawler.
2. Activate Cryptic Trilobite's first ability by removing a +1/+1 counter from it, adding CC that can only be spent to activate abilities.
3. Activate Crystalline Crawler's first ability by removing a +1/+1 counter from it, adding 1.
4. Activate Gemstone Array's second ability by removing a charge counter from it, adding 1.
5. Activate Lost Jitte by removing a charge counter from it, untapping Karn's Bastion.
6. Repeat.

This intricate engine creates an endless loop of amplification by turning Karn's Bastion into a self-sustaining proliferation station. Cryptic Trilobite and Crystalline Crawler act as your mana batteries, shedding their own +1/+1 counters to generate the exact energy needed to fuel the loop, which Gemstone Array helps convert and filter as needed. Meanwhile, Karn's Bastion adds extra counters back to the board upon resolution, and Lost Jitte converts those new charges into a fresh untap for your land—allowing you to repeat the entire sequence indefinitely.