digitalbusker quoted The Hero of Ages by Brandon Sanderson (Mistborn Era One, #3)
Content warning Spoilers for Mistborn: The Hero of Ages
"He is dead," TenSoon said. "That is true. But the First Contract did not die with him! Vin, the Heir of the Survivor, was the one who killed the Lord Ruler. /She/ is our Mother now. Our First Contract is with her!"
— The Hero of Ages by Brandon Sanderson (Mistborn Era One, #3) (Page 119)
Apparently the First Contract has a Santa clause?