Cast Ancestral Statue by paying {4}.
When Ancestral Statue enters the battlefield, it and Surge Conductor trigger.
Resolve the Ancestral Statue trigger, returning it from the battlefield to your hand.
Resolve the Surge Conductor trigger, putting a charge counter on Magistrate's Scepter.
Repeat from step 1 two additional times.
Activate Magistrate's Scepter's second ability by tapping and removing three charge counters from it, causing you to take an extra turn after this one.
Repeat each turn.

Infinite turns

Lock

Surge Conductor

Magistrate's Scepter

Ancestral Statue

Activate Sensei's Divining Top's second ability by tapping it, causing you to draw a card and put Sensei's Divining Top on top of your library.
Cast Sensei's Diving Top from the top of your library by paying {0} and removing a counter from a creature you control.
When Sensei's Divining Top enters the battlefield, Surge Conductor triggers, putting a counter on a creature you control that already has a counter on it.
Repeat.

Combos with "Surge Conductor"