Jack, the Bone Daddy is a custom champion in League of Legends.
Jack's abilities have no costs related to them. His secondary resource bar tracks his unique mechanic: Ribs.
He can have a maximum of 14 Ribs and begins the game with 10. The number of Ribs he has is displayed in the secondary resource bar, and he gains 1 Rib every 5 seconds. Ribs do not decay idly.