Medomai the Ageless + Idris, Soul of the TARDIS + Jhoira's Timebug + Mycosynth Lattice

Medomai the Ageless

Idris, Soul of the TARDIS

Jhoira's Timebug

Mycosynth Lattice

How it works

1. Deal combat damage to an opponent using Medomai the Ageless.
2. Medomai the Ageless triggers, causing you to take an extra turn after this one.
3. Cast Idris by paying 1.
4. When Idris enters the battlefield, it triggers, exiling Medomai the Ageless until Idris leaves the battlefield.
5. Activate Jhoira's Timebug by tapping it, putting a time counter on Idris.
6. Move to your extra turn.
7. At the beginning of your upkeep, Idris's vanishing ability triggers, removing a time counter from it.
8. Deal combat damage to an opponent using Idris.
9. Idris triggers, causing you to take an extra turn after this one.
10. Repeat from step 5.

By turning every permanent into an artifact with Mycosynth Lattice, we pave the way for Idris, Soul of the TARDIS to effortlessly imprint Medomai the Ageless as it enters the battlefield, gleaning the legendary Sphinx's fearsome extra-turn trigger without inheriting its restriction against attacking during those extra turns. While normally Medomai can never attack on bonus turns, Idris neatly sidesteps this curse, and Jhoira's Timebug steps in to manipulate time counters so that Idris's vanishing mechanic never forces it to leave the battlefield prematurely. The result is an unbreakable chain of infinite turns where our mechanized Sphinx swings over and over again, locking down the game completely.