Hi, it's me agian

. I have been wondering... I got some doubts about the resusitation potion (ya know, the one that gets you back 80% of the SP u put on a skill...).
Well here's my question: Does using this potion... can it delevel your mastery lvl. In other words... Lets say I have a mastery lvl of 80/300 (as you can see... this is a chinese char im takin' about). By using the potion... does it delevel my mastery lvl to 79/300? Or... it just delevels a skill you have and gives you 80% of the SP -.-'?
If there's something that needs explaining or if I'm missing something, please don't hesitate, just add it on.
Oh and another question

, what if I'd have already 290 mastery lvl out of 300... meaning I can just add 10 more lvls 2 a mastery... again I'm taking chinese chars as an example. Can I lower my mastery lvl by deleveling or something? How? Are there any other ways?
Thank you
