Aristotle addresses this question.

- Luck is defined as being without reason, and skill is defined as what we can produce with predictability (the work of reason). So a skill itself is not ever luck.

- But what about people we observe who consistently achieve good things, but don’t have a reason in mind in pursuing? This seems to be a kind of luck. 

- There is one type who is hitting on good things more or less by coincidence. Another type, though, has a nature that is in close touch with the divine order of things. This nature of theirs was not chosen, and it achieves repeated good outcomes without the use of reason, but rather by following their nature. In fact, deliberation harms such a person. (A sign or such people is that they have predictive dreams.) 

Tldr: There is a kind of repeated good luck — but it is not a skill, it is a nature.

playing /bracket, assisting /bracky, talking /greatbooks

Next time I do an Aristotle group, hope you can join. I think you’ll love it.