Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Gruul Turf + PuPu UFO

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Gruul Turf

PuPu UFO

How it works

1. Activate PuPu UFO by tapping it, putting Gruul Turf from your hand onto the battlefield.
2. When Gruul Turf enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Gruul Turf trigger, returning it from the battlefield to your hand.
4. Resolve the Stone-Seeder Hierophant trigger, untapping it.
5. Activate Stone-Seeder Hierophant by tapping it, untapping PuPu UFO as it is a land due to Ashaya.
6. Repeat.

This clever loop transforms your entire creature base into a perpetual motion machine, fueled by Ashaya, Soul of the Wild turning every nontoken creature you control into a Forest land. That land status is crucial because it allows Stone-Seeder Hierophant to untap PuPu UFO directly with its tap ability, while also triggering Stone-Seeder Hierophant's landfall ability whenever a new land arrives. You use PuPu UFO to repeatedly drop Gruul Turf into play, which bounces itself back to your hand to keep the cycle going while generating endless entry triggers.