At the beginning of your combat phase, Inspirit triggers twice, 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 brilliant sequence locks down the game by leveraging the permanent duplication of Mirror Room // Fractured Realm to double the combat triggers of Inspirit, Flagship Vessel. With the room's doubling effect active, Inspirit's combat trigger drops four charge counters onto Magistrate's Scepter every single turn rather than just two. This accumulation quickly surpasses the three counters needed to activate the scepter for an extra turn, letting you chain endless turns while your artifacts enjoy complete protection.