frost claw

n., adj.

In sports, a ball-handler who comes off the bench to lead his or her team to victory; someone (usually a ball-handler) with ice water in his/her veins; a northern sportsperson or the hand of one.
(early C21: cf. "hot hand.")

"With that epic comeback, TB12 cements his place in history as the ultimate frost claw!"

"Showing off his frost claw, Aaron Rodgers led the Packers to their 9th-straight 4th qtr. comeback!"