Activate Altar of Dementia by sacrificing Dragon's Eye Savants.
When Dragon's Eye Savants dies, Missy's first ability triggers, returning Dragon's Eye Savants from your graveyard to the battlefield face down as a 2/2 Cyberman artifact creature.
Resolve the Altar of Dementia ability, causing target player to mill cards equal to Dragon's Eye Savants's power.
Activate Dragon's Eye Savants's morph ability by revealing a blue card from your hand, turning it face up.