Kurkesh, Onakke Ancient + Magistrate's Scepter + Contagion Clasp

Prerequisites

Magistate's Scepter has at least two charge counters on it.

Steps

1. Activate Contagion Clasp by paying {4} and tapping it.
2. Kurkesh triggers, choose not to pay for the trigger.
3. Resolve the Contagion Clasp ability, putting a charge counter on Magistrate's Scepter.
4. Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it.
5. Kurkesh triggers, causing you to pay {R} to copy Magistrate's Scepter's ability.
6. Resolve both Magistrate Scepter abilities, causing you to take two extra turns after this one.
7. Move to your next turn.
8. Activate Magistrate's Scepter's first ability by paying {4} and tapping it.
9. Kurkesh triggers, causing you to pay {R} to copy Magistrate's Scepter's ability.
10. Resolve both Magistrate Scepter abilities, putting two charge counters on it.
11. Move to your next turn.
12. Repeat.