Spider-Man India + Crystalline Crawler + Whitemane Lion + Temur Battlecrier

Spider-Man India

Crystalline Crawler

Whitemane Lion

Temur Battlecrier

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 delightful loop centers on casting Whitemane Lion for a single white mana, which triggers Spider-Man India to distribute a +1/+1 counter onto Crystalline Crawler. That newly acquired counter can immediately be removed from Crystalline Crawler to generate the exact white mana needed to cast Whitemane Lion all over again. Meanwhile, Whitemane Lion's own entry trigger forces it right back to your hand, resetting the loop while Temur Battlecrier stands ready to potentially discount your spells if your growing board gets large enough.