Ashaya, Soul of the Wild + Stone-Seeder Hierophant + Boros Garrison + PuPu UFO

Ashaya, Soul of the Wild

Stone-Seeder Hierophant

Boros Garrison

PuPu UFO

How it works

1. Activate PuPu UFO by tapping it, putting Boros Garrison from your hand onto the battlefield.
2. When Boros Garrison enters, it and Stone-Seeder Hierophant trigger.
3. Resolve the Boros Garrison 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 turns a modest land-dropper into an infinite engine by weaving together type-changing magic and untap mechanics. Thanks to Ashaya, Soul of the Wild, your nontoken creatures—including Stone-Seeder Hierophant and PuPu UFO—are also Forests, which allows Stone-Seeder Hierophant to directly untap PuPu UFO with its tap ability. PuPu UFO then uses its ability to repeatedly cheat Boros Garrison into play from your hand, which bounces itself back to your hand upon entry and simultaneously sparks Stone-Seeder Hierophant's landfall trigger to reset the loop.