Emry, Lurker of the Loch
Coretapper
Magistrate's Scepter

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
Coretapper and Emry do not have summoning sickness.
2 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, putting two charge counters on Magistrate's Scepter.
3
Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, taking an extra turn after this one.
4
Activate Emry by tapping them, allowing you to cast Coretapper from your graveyard this turn.
5
Cast Coretapper by paying 2.
6
Repeat each turn.

   Results

What do I get from this combo?
Infinite turns
Lock
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