Activate Ashnod's Altar by sacrificing Infestation Expert // Infested Werewolf, adding CC.
When Infestation Expert // Infested Werewolf dies, Nim Deathmantle triggers, causing you to pay 4 to return Infestation Expert // Infested Werewolf from your graveyard to the battlefield and attach Nim Deathmantle to it.
When Infestation Expert // Infested Werewolf enters, it triggers, creating at least one creature token.
Activate Ashnod's Altar by sacrificing a creature token, adding CC.