Mystic - an endgame PvPer?

Some people may think Mystic isn't any godly PvPer. I disagree, they're pretty awesome later, I think, thou they require a lot of thinking and are a bit tricky (kinda like Psychic, but in a different way - we need to combine many things). We don't really have any good attack skills apart of 2sparked uncritable not-really-an-AoE Thicket. Good thing is that it's quick skill with pretty fast CD for an ulti. But it changes later:

a) Level 79 - here we get Nature's Barrier, 30 chi fast skills with 90 sec CD which grants 50% Damage Reduction for 8 sec at cost of immobilizing. Awesome against Ranged (also Meeles when followed by Spark/Genie).

b) Level 100 - Swinging Cloud Dance is pretty awesome heal IMO. Combine it with other healing spells, Energy Leech and Nature's Barrier to make yourself pretty hard to kill. Lucky break is 1 minute CD instant skill making next hit critical. U may ask "So what? Thicket and AS can't crit". To be honest, AS isn't much of a PvP skill, unless used against AAs. And about Thicket... yea, its lack of stackableness with Sparks and Lucky Break hurts. But, here comes Weeping Breeze Dance - pretty fast hard hitting spell. Its DMG seems to be similiar or a bit lower than Divine Pyrogram's or Sandstorm's, but if it's casted with Lucky Break it's 2x Magic Attack + 500% Weapon Attack + 7000. Level 11 BIDS is 1x Magic Attack + 500% Weapon attack + 13955. Not much of a difference, huh? Not saying that LB + WBD costs 50 chi, so it's easily stackable with 3x Spark. Of course BIDS is 12 meter AoE, but for 1shotting in 1v1 LB + WPD is better IMO!

P.S. Can some1 confirm the info from ecatomb, does Sage Spark increases damage by 700% and Demon Spark by 500%?