Just some Add-ons.
Sniper: A very easy fight, volcano on your spot, cobweb the sniper, blinding mist on sniper's spot, go double bolt, MB the sniper, spam firebolts. If he's on GTB, use deluge instead, then BOS, spam Stave til death.
its better to mist on urself a good sniper wont stand in a single spot.and use its traps. its not that easy though. u can only kill a decent sniper by ur skill in bolt/stave combination.
Professor: I troll these people with 95% MATK reflect + 2deviling cards, and it means instant death for them. but be careful about it because there might be some other people KOSing you. Best idea possible, would be, just go on your default gears, then GTB, then Stave as usual.
i would never troll with 2 devs.its fatal even in 1v1 fights against profs if u do that and a decent one is ur opponent ull be dead in an instant by stave. especially when facing a hybrid prof like me and others who are not burst bolters. i fix my matk in 28k or so. so i wouldnt die easy on reflect.
Whitesmith: Pretty easy fight. These whitesmiths rely on buffs. dispel them everytime they buffs themselves. if they go GTB you can't Dispel them. But sure you can Stave Crash them right? xD
as ray said. its not an easy fight. though a white smith can never kill u alone nor u can kill it alone if ur hands and mind isnt that fast to respond. same with a champ. though its easier to fight a champ than a smith. so its a vice versa for these for me.
Also ur support build is actually a troll build for me no offense cause in my opinion a full support prof should be the usual build but more inclined to the defense role. since profs are already tanky and defensive. u should know how to support in team fights. and use ur skills accordingly. and ur bolts are fatal. ur still a mage u can force gtb any player and if they do so then ur team will surely kill them.
You can still kill a paladin but a paladin is almost no chance. unless u can strip them.
Keep up the good job !