Cocoon of the Ancients'

Defender

Impenetrable Shell: When Cocoon of the Ancient's toughness reaches 0, exile it and return a creature card named "Awakened Ancient" from your hand or graveyard to the battlefield.

Fortified Cocoon: Prevent all damage dealt to this creature by non-combat sources.

The shell holds more than just wings—it cradles the dawn of a new power