Ok... so you aren't joking then. Then what is the written form of luck, according to you? Because I really don't get what you mean...Because luck is not a state, it's an opinion closely correlated with chance. You can increase your chances, but have either bad or good luck.
P.S. Also I meant boost as in +5%, +15% Att/Def not "Thunder shield" and "Thunder Boost" which give extra rolls, thus increase your chances. Therefore on some level your luck "increases"