Its mana value being so low makes it an easy win condition for any decks that can maintain five or more creatures at once, which isnt exactly a high bar
(If a permanent with a stun counter would become untapped, remove one from it instead.) Sets that primarily take place there : Champions of Kamigawa , Betrayers of Kamigawa , Saviors of Kamigawa , and Kamigawa: Neon Dynasty Planeswalker natives (with planeswalker cards) : Kaito, Tamiyo, and the Wanderer Kamigawa is a plane initially inspired by Japanese mythology
For each card they draw, Psychosis Crawler's second ability triggers, but it doesn't do anything yet
Purphoros, God of the Forge and Impact Tremors decks seem pretty good to me
So, you sacrifice Medomai with Viscera Seers ability during your extra turn and attack with Yore-Tiller Nephilim, which brings Medomai back to the battlefield, tapped and attacking