Spider-Man India + Crystalline Crawler + Stonecloaker + Semblance Anvil

Spider-Man India

Crystalline Crawler

Stonecloaker

Semblance Anvil

How it works

1. Cast Stonecloaker by paying .
2. Spider-Man India triggers, putting a +1/+1 counter on Crystalline Crawler.
3. When Stonecloaker 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 clever loop relies on Semblance Anvil to discount artifact creature spells by two mana, allowing Stonecloaker to be cast for just {W}. Each time Stonecloaker enters the battlefield, its own trigger forces it right back to your hand, continuously triggering Spider-Man India to distribute a +1/+1 counter onto Crystalline Crawler. You can then crack that very counter using Crystalline Crawler's mana ability to generate the white mana needed to cast Stonecloaker all over again.