A rare consumable card donated from Ren's deck whose effect has not yet been described.
Ren removes all non-totem cards before handing her deck assets to Carl. Glow-Up is one of the final two cards she highlights as rare and unused.
The card cannot enter Carl's ordinary inventory, so he carries it physically with the rest of the stack until he can give it to Donut. Its class beyond being consumable and its gameplay effect remain unknown.
A bright collectible card showing a silhouette transforming under radiant cosmetic and power effects.
Glow-Up is an unknown high-value resource transferred to Donut's future deck.