Sigil of the New Dawn
Coretapper
Magistrate's Scepter

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Coretapper does not have summoning sickness.
3 each turn available

   Steps

How does this combo work?
1
Activate Coretapper's first ability by tapping it, putting a charge counter on Magistrate's Scepter.
2
Activate Coretapper's second ability by sacrificing it.
3
Sigil of the New Dawn triggers, causing you to pay 1 to return Coretapper from your graveyard to your hand.
4
Resolve Coretapper's ability, putting two charge counters on Magistrate's Scepter.
5
Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, taking an extra turn after this one.
6
Cast Coretapper by paying 2.
7
Repeat each turn.

   Results

What do I get from this combo?
Infinite turns
Lock