Medomai the Ageless + Idris, Soul of the TARDIS + Karn's Bastion + Phyrexian Scriptures
4-card combo · WUBR
Verdict
Yes — this 4-card loop locks opponents out of the game with infinite turns once Medomai the Ageless lands a hit through an open board.
- Cards required
- 4
- Cheapest stack total
- $4.16
- Color identity
- WUBR
- Popularity
- 0 decks
- Format
- Commander
Medomai the Ageless earns an extra turn on a clean combat connection; Idris, Soul of the TARDIS enters, exiles Medomai, and takes over as the combat threat for that extra turn. Karn's Bastion refills Idris's vanishing counter each upkeep before it ticks down, keeping Idris alive indefinitely and cycling the loop — the prerequisite of an unblockable board state does the heavy lifting, so evasion enablers like Reconnaissance or Distortion Strike are load-bearing infrastructure.
Recipe
How it works
01
Prerequisites
An opponent cannot block creatures you control.
02
Steps
- Cause Medomai to become an artifact.
- Deal combat damage to an opponent using Medomai the Ageless.
- Medomai the Ageless triggers, causing you to take an extra turn after this one.
- Cast Idris by paying
. - When Idris enters the battlefield, it triggers, exiling Medomai the Ageless until Idris leaves the battlefield.
- Move to your extra turn.
- At the beginning of your upkeep, Idris's vanishing ability triggers, removing a time counter from it.
- Activate Karn's Bastion's second ability by paying
and tapping it, putting a time counter on Idris. - Deal combat damage to an opponent using Idris.
- Idris triggers, causing you to take an extra turn after this one.
- Repeat from step 6.
03
Result
Infinite turns; Lock
Variations
Cheaper, tighter, alternate lines
Phyrexian Scriptures turns Medomai into an artifact to satisfy Idris's trigger condition — without it, the loop does not start, making it the most cut-able-looking piece that is actually mandatory. Any commander shell running Aesi, Tyrant of Gyre Strait or Niv-Mizzet Reborn that already clears blockers fits naturally; the infinite-turns result closes the game without a separate kill condition.
Related
Other combos sharing these cards
Tekuthal, Inquiry Dominus + Magistrate's Scepter + Lithoform Engine + Karn's Bastion
Infinite turns; Lock
Verified on Commander Spellbook · Combo ID idris-soul-of-the-tardis-karns-bastion-medomai-the-ageless
Updated . Data from Commander Spellbook, Scryfall, and EDHREC.