Lost Jitte + Karn's Bastion + Cryptic Trilobite + Kami of Whispered Hopes

Lost Jitte

Karn's Bastion

Cryptic Trilobite

Kami of Whispered Hopes

How it works

1. Activate Karn's Bastion by paying 4, putting a charge counter on Lost Jitte and two +1/+1 counters on Cryptic Trilobite.
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 Lost Jitte by removing a charge counter from it, untapping Karn's Bastion.
4. Repeat.

This loop generates infinite activations of Karn's Bastion by using Cryptic Trilobite as a specialized mana source that feeds entirely into abilities. With Kami of Whispered Hopes amplifying counter placement, every interaction is supercharged, while Lost Jitte acts as the vital bridge that untaps Karn's Bastion to restart the sequence. Together, these artifacts and creatures create a self-sustaining engine of growth and repetition.