Ruin Seeker.

This officially licensed TUNIC hard-enamel pin set was designed by Jorge M. Velez. Series design by Jon Kay. 

Each PINVERSE pack includes two enamel pins, a holofoil character card, and a card holding two stickers, all packed in a display box.

The character pin measures about 3,6 centimeters tall; the key is about 1,8 centimeters tall.