62 Traits built the 444 Collection before adding the 1/1s. Click a Skull for a closer look. Every skull's score is calculated the same way. The more rare a trait the more weight it carries, not just a flat average. Ranks are Common → Uncommon → Rare → Legendary → Awakened → Mythic. Anything holding a true 1/1 trait ascends to Mythic; any Skull that has received the Skeleton (Awaken) upgrade ranks as Awakened.