Genku, Future Shaper + Crystalline Crawler + Cryptic Trilobite + Kami of Whispered Hopes

Genku, Future Shaper

Crystalline Crawler

Cryptic Trilobite

Kami of Whispered Hopes

How it works

1. Activate Genku by paying 3, putting two +1/+1 counters on each creature you control due to Kami of Whispered Hopes.
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 Crystalline Crawler's first ability twice by removing two +1/+1 counters from it, adding .
4. Repeat.
5. Once you have infinite C, you may forego removing counters from Cryptic Trilobite.

This intricate loop revolves around Kami of Whispered Hopes, whose replacement effect supercharges every counter-placement into a net gain. With that multiplier active, Genku, Future Shaper feeds the engine while its activated ability gets paid for by the combined mana-generation of Crystalline Crawler and Cryptic Trilobite. As you cycle counters off the Crawler and Trilobite to fuel Genku and produce colored and restricted mana, the extra counters provided by Kami of Whispered Hopes ensure you always end with more resources than you started with, resulting in boundless growth and infinite ability-only mana.