Medomai the Ageless + Alesha, Who Smiles at Death + Auton Soldier + Phantom Train

Medomai the Ageless

Alesha, Who Smiles at Death

Auton Soldier

Phantom Train

How it works

1. Declare Alesha as an attacker.
2. Alesha triggers, causing you to pay U/BU/B to return Auton Soldier from your graveyard to the battlefield tapped and attacking as a nonlegendary copy of Medomai the Ageless.
3. Deal combat damage using Auton Soldier.
4. Auton Soldier triggers, causing you to take an extra turn after this one.
5. Activate Phantom Train by sacrificing Auton Soldier
6. Repeat each turn.

This ingenious loop turns a legendary limitation into an infinite engine by relying on Auton Soldier's clever cloning ability, which enters the battlefield as a nonlegendary copy of Medomai the Ageless. Because this copy lacks the legendary trait and isn't the original Medomai, it bypasses the restriction that prevents Medomai from attacking during extra turns, allowing it to repeatedly trigger extra turns upon dealing combat damage. Alesha, Who Smiles at Death orchestrates this resurrection from the graveyard every time the cycle restarts, fueled by the payment needed to bring back your crucial copy. Finally, Phantom Train provides a clean sacrifice outlet to clear away the old copy at a moment's notice so the sequence can safely reset and repeat each turn.