There are worse words in my vocabulary than "luck", I assure you. =D
Here's an interesting puzzle: is there no such thing as luck? Does God control every roll of the dice or every turn of the card? Not CAN God control them, but does God CARE TO control them? Does God care about games of chance? Are games of chance a sin? Are games a sin? Because virtually every game requires some measure of luck. Even say...Scrabble. You must have the skill to form the highest scoring words and know where to best place them. But you must have the luck to pick the right tiles, and the luck that your opponent will play the right words in the right places and not use the spots you plan to use.