Activate Aeromoeba by discarding Ovalchase Daredevil.
Bone Miser's first ability triggers, creating a 2/2 Zombie creature token.
Resolve the Aeromoeba ability.
Activate Shilgengar's first ability by sacrificing the Zombie, creating a Blood token.
When the Blood enters the battlefield, Ovalchase Daredevil triggers, returning Ovalchase Daredevil from your graveyard to your hand.
Repeat.
This clever loop centers around the endless discard cycle of Ovalchase Daredevil, which is fed right back into your hand every time an artifact enters the battlefield. Aeromoeba acts as your active engine for discarding the Daredevil, while Bone Miser converts that discard into a fresh 2/2 Zombie token to keep your sacrificial fuel topped off. Finally, Shilgengar, Sire of Famine devours that Zombie token to instantly generate the Blood token that triggers the whole loop anew.