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