At the beginning of your combat phase, Inspirit triggers, putting four charge counters on Magistrate's Scepter.
Activate 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.
Repeat each turn.
This ingenious setup achieves infinite turns by supercharging Magistrate's Scepter right at the start of your combat phase, thanks to Inspirit, Flagship Vessel's combat trigger. The whole loop is miraculously doubled by Vorinclex, Monstrous Raider, whose replacement effect ensures that Inspirit drops four charge counters onto the Scepter instead of the usual two—leaving you with plenty of fuel to repeatedly activate the Scepter for endless extra turns.