Nim Deathmantle + Ashnod's Altar + Eager Glyphmage

Nim Deathmantle

Ashnod's Altar

Eager Glyphmage

How it works

1. Activate Ashnod's Altar by sacrificing Eager Glyphmage, adding CC.
2. When Eager Glyphmage dies, Nim Deathmantle triggers, causing you to pay 4 to return Eager Glyphmage from your graveyard to the battlefield and attach Nim Deathmantle to it.
3. When Eager Glyphmage enters, it triggers, creating a creature token.
4. Activate Ashnod's Altar by sacrificing a creature token, adding CC.
5. Repeat.