Cast Extract from Darkness by paying its mana cost
Holding priority, cast Naru Meha by paying its mana cost.
When Naru Meha enters, it triggers, targeting Extract from Darkness.
Holding priority, activate Shilgengar by sacrificing Naru Meha.
Resolve the Naru Meha trigger, copying Extract from Darkness
Resolve the Extract from Darkness copy, causing each player to mill two cards and returning Naru Meha from your graveyard to the battlefield.
Repeat from step 3.
This ingenious loop centers around an endless cycle of reanimation and sacrifice, fueled by Shilgengar, Sire of Famine turning your fallen allies into Blood tokens while waiting to cash them in. By casting Extract from Darkness, you set the stage to pull Naru Meha, Master Wizard straight back from the graveyard as she enters the battlefield to infinitely copy the original spell. Each iteration expands your mills and recycles Naru Meha through Shilgengar's altar, letting you repeat the trick indefinitely for a sweeping cascade of triggered abilities.