Tekuthal, Inquiry Dominus + Magistrate's Scepter + Lithoform Engine + Karn's Bastion

Prerequisites

• Magistrate's Scepter has at least one charge counter on it.

Steps

1. 1Activate Karn's Bastion's second ability by paying and tapping it.
2. 2Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Karn's Bastion's ability.
3. 3Resolve both Karn's Bastion abilities, putting four charge counters on Magistrate's Scepter.
4. 4Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, causing you to take an extra turn after this one.
5. 5Move to your next turn.
6. 6Activate Karn's Bastion's second ability by paying and tapping it, putting two charge counters on Magistrate's Scepter.
7. 7Repeat steps 4 and 5 one time.
8. 8Repeat from step 1.

Effects

• Infinite turns
• Lock