Ninja Class Questions

[Gingervitus]

I have just started a campaign with a character that is a ninja but I had a couple of questions.
1) When I reach level 10 I am able to learn master tricks, so i was wondering if I could retrain my ninja to unlearn my old ninja tricks and replace them with master tricks.
2) Am I reading it wrong or is the master trick "Invisible Blade" almost exactly like the level 20 "Hidden Master" except it costs less ki but allows you to do less damage tolower attributes?
I believe that is all the questions I have for now, thanks for any help.

[Avianfoo]

1) no
2) Almost but not quite. Invisible blade master trick requires the vanish trick. And you get it at level 10. Hidden master, the ninja just gets for being lvl 20. Also hidden master is much more powerful since it cannot be purged.

Also level 20 is a myth. Very few games actually get there.

[Gingervitus]

Thanks! I can imagine, I have a hard enough time getting to level 10 in campaigns, but that is more to do with playing with people online and the flakiness of people when do these sorts of things online. I have had both players and DMs just disappear which can be super frustrating once I start getting into a character.