Coretapper and Magistrate's Scepter on the battlefield.
Coretapper does not have summoning sickness.
({6} magic symbol) ({B} magic symbol) each turn available.
Steps
Activate Coretapper's first ability by tapping it, putting a charge counter on Magistrate's Scepter.
Activate Coretapper's second ability by sacrificing it, putting two charge counters on Magistrate's Scepter.
Activate Magistrate's Scepter's second ability by tapping it and removing three charge counters from it, taking an extra turn after this one.
Cast Disturbed Burial with buyback by paying ({4} magic symbol) ({B} magic symbol) , returning Coretapper from your graveyard to your hand and returning Disturbed Burial to your hand.