-1. All class buffs.
-2. After buff stacking bug was recently "fixed" I noticed a very curious thing. Now buffs don't stack at all, they overwrite each other.
To help you to understand what I mean, lets take a closer look:
Let's say, I have a warlock, a mage and a priest in my party. Everyone buffs other party members.
What should happen:
http://www.db.pandawow.me?spell=21562/power-word-fortitude gives all party members 10% stamina;
http://www.db.pandawow.me?spell=109773/dark-intent now gives all members 10% spell power;
http://www.db.pandawow.me?spell=1459/arcane-brilliance gives everyone 5% crit;
Screenshot from random WoD PvP video [PTR] (Target buffs)
Screenshot 2 from random MoP PvP video [PTR] (Top right corner, player buffs)
What happens on pandawow right now:
Screenshot 1
Screenshot 2
Same with http://www.db.pandawow.me?spell=469/commanding-shout overwriting http://www.db.pandawow.me?spell=21562/power-word-fortitude et cetera, et cetera.
-3. Buffs must apply with each other but they must not stack same stats.
-4. 09.04.2015 - 10.04.2015
-5. x10
-6. 8/10, this is extremely annoying and may actually cause some stat loss, if players do not know or pay attention to what they are doing.
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