Devil's Luck
When a player on an online game gets incredibly lucky with obtaining loot/gear/specialty items in the game without grinding for it.
Player 1: I Can't believe you got that legendary item on the third try!!
Player 2: Yeah, I have some major devil's luck going on this week.
Player 2: Yeah, I have some major devil's luck going on this week.
Devil's Own Luck
A karmic escape artist. Someone so morally and/or criminally corrupt that they should be in prison or worse. Instead, they not only find a way out but are also showered with money, gifts, and an entourage of fixers, enablers, loyalists, and supporters. Someone with luck so extreme and inexplicable as to be nearly supernatural, as if they sold their soul to the Devil.
He must have the Devil's Own Luck, considering all of the death, pain, and suffering he's caused yet he's still walking around like he's untouchable.