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This skill is not as important for Assassins as it is for other classes, since especially, Lucky 7 comes built with Mastery in hit. However, recently in Japanese Maple Story(Buy maplestory mesos) they patched and weakened the Assassin class, on top of things, made Lucky 7 affected by Mastery. We will make an edit to the skill build if they ever make it so that Global Maple Story has to deal with this, but for now, it is all good.
You definately should max this skill, a while back people were saying that you should not, but there are more reasons that you should. Mastery will make drain a lot better, and it will allow you to carry more stars. A lot more stars, especially if you are the right kind of Assassin who carries about 15 sets of stars with you. In that case, that is 3000 extra stars for your disposal, and it is definately worth it.
-Max Level(cheap maplestory mesos) : 20.
Level 1: Claw mastery 15%, accuracy +1, maximum number +10.
Level 11: Claw mastery 40%, accuracy +11, maximum number +110.
Level 1: Claw mastery 60%, accuracy +20, maximum number +200.
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