Spider-Man India + Crystalline Crawler + Whitemane Lion + Heartless Summoning

Spider-Man India

Crystalline Crawler

Whitemane Lion

Heartless Summoning

How it works

1. Cast Whitemane Lion by paying .
2. Spider-Man India triggers, putting a +1/+1 counter on Crystalline Crawler.
3. When Whitemane Lion enters, it triggers, returning itself from the battlefield to your hand.
4. Activate Crystalline Crawler by removing a +1/+1 counter from it, adding .
5. Repeat.

This loop turns a continuous cycle of bouncing and recasting into an infinite engine, fueled entirely by cost-reduction and mana conversion. Heartless Summoning lowers the cost of Whitemane Lion down to just a single white mana, allowing you to repeatedly cast it with the mana generated by Crystalline Crawler. Each time Whitemane Lion enters the battlefield, its own ability forces it right back to your hand, while simultaneously triggering Spider-Man India to grow the Crystalline Crawler with a fresh +1/+1 counter. You can then strip that counter away using Crystalline Crawler's ability to pay for the next iteration of Whitemane Lion, sustaining an endless loop of creature entries, leaves, and storm count.