I play on a high rate server with MP potions and S80 gear (but no sick over enchanted stuff). I recently rolled OL, but I am not sure exactly how I'm supposed to play in group PVP because they can fill in so many roles. Help is appreciated! Thanks.

Ok
well the fact that its a high rate server shows that overenchanted jewels(not sick as u said) and maybe even epic jewels are avilable
that also means that there could be probmels with seals land rates-they will never land OR they will always land(seen both)
so u coul do the following
1)over enchant ur seals(suspension is great) and try to debuff their lines wich means 100% ur victory
2)if 1 is not possible cuz of seals landing rate u could try to be "sleeper"
target nuker/archer/glad or even better their healer and keep casting dreaming spirrit
3)combining 2 with 3 u have to recharge the cp of ur mates all the time
(even better if u r in a clan..else its shi7y)
and dont forget the heart of paagrio
no matter that its heal over time it helps
justr try to maximize ur cast spd so the reuse delay of the seals/cp resotration spells is lower

I ve seen OL on HRS that just use soul guard and mas drains lol...mp pots FTW

stfu, i play OL in most HR and its not just about draining. U still have to heal CP cos ur clan mates are not so imba as u. Sels are also good, but on L2J servers 1) they are bugged; 2) they wont do so much difference since u can have 75759588767211807573875 buffs

even if they decrease the stats as they should they can still remove buffs from enemies nerfing them a lot

they cant cos in L2J u have infinite buff slots

not rly...OLs tend to b da ultimate nukers since HR has imba mp pots...from time to time they may heal cp pots...but comon...30% of HR players know that skill even exists...lol....about seals only if they r enchanted cause all those 30+ buffs slots...

u r all flooder nobz:D
i said all he could do..

jajaja...anything to increase my e-penis...id on't like my post counts....yet

i see.. i see

go on!u have my blessing!