Some thing fishy is going on, i have been victim of afew mages which have been able to hit with lesser pyro for 560k damage, note this is only very few mages doing this (like 2 so far) im not sure how its being done, if any would like to shed light on this please.
also it was also done while in a bg flying down from lumber to centre mid air on glider.
I doubt it’s a bug or an exploit, it’s more likely a gimmick.
Fire Mages have an absurd number of stackable buffs, probably just the stacking of various Mage talents with Sun King’s Blessing, some battleground powerups/consumables and maybe the 2/4 set and some Augvoker buffs.
Baseline PvP
Pyroblast does 18% more damage in PvP than PvE
Mage talents
Incanter’s Flow - cycling 2% to 10% damage buff in 2% incriments
Fire talents (normal and PvP)
Flamecannon - standing still grants a 3% damage increase every 2 seconds, stacking up to 5 times
Firestarter - guarantees Pyroblast will crit on targets over 90% HP
Improved Scorch - causes Scorch to apply a 4% damage debuff on targets below 30% for 12 seconds, stacks 3 times
Firemind - consuming Hot Streak grants a 1% intellect boost for 12 seconds, stacks 3 times
Fevered Incantation - consecutive critical strikes grant a 2% critical strike damage increase, lasts 6 seconds, stacks 4 times
Wildfire - 8% critical strike damage increase during Combustion
Controlled Destruction - Pyroblast damage increased by 8% when targets are above 70% or below 30% HP
And mostly likely:
Sun King’s Blessing - after 8 Hot Streaks your next hard-cast Pyroblast deal 260% increased damage and triggers Combustion for 6 seconds
Less likely:
Unleashed Inferno (on the same choice node as SKB) - 50% increased damage to Pyroblast while Combustion is active
Tier set
2-set - Pyroblast and Flamestrike increase your critical strike damage by 3% for 12 seconds, stacking up to 5 times
4-set -Activating Combustion doubles the effect of the 2-set for the duration
PvP consumables/powerups
Saltwater Potion - 30% increased damage for 12 seconds
Berserker powerup - 30% increased damage for 60 seconds
As you can see there’s an absolute metric tonne of buffs available that could contribute to such a hit, not forgetting that if it was a crit that’s an additional 50% over base + the various critical strike damage buffs from talents/tier, and all these are without considering an Augvoker being nearby.