Medomai the Ageless + Idris, Soul of the TARDIS + Sword of Truth and Justice + Silverskin Armor

Prerequisites

• An opponent cannot block creatures you control.
• Silverskin Armor attached to Medomai the Ageless.

Steps

1. 1Deal combat damage to an opponent using Medomai the Ageless.
2. 2Medomai the Ageless triggers, causing you to take an extra turn after this one.
3. 3Cast Idris by paying .
4. 4When Idris enters the battlefield, it triggers, exiling Medomai the Ageless until Idris leaves the battlefield.
5. 5Activate Sword of Truth and Justice's equip ability by paying , attaching it to Idris.
6. 6Move to your extra turn.
7. 7At the beginning of your upkeep, Idris's vanishing ability triggers, removing a time counter from it.
8. 8Deal combat damage to an opponent using Idris.
9. 9Idris and Sword of Truth and Justice trigger.
10. 10Resolve the Idris trigger, causing you to take an extra turn after this one.
11. 11Resolve the Sword of Truth and Justice trigger, putting a +1/+1 counter on a creature you control, then putting a time counter on Idris.
12. 12Repeat from step 6.

Effects

• Infinite turns
• Lock