Fire mage Ignite is bugged in PvP (idk about pve) and a guy in shuffle was abusing it named Partypower.
He was doing nothing all game but applying his ignite and doing 80k dps all game without doing anything but spamming random spells in random order. 64% of his damage was ignite dot.
As I don’t know how to post images, I cannot provide the proof, but if somebody asks me I will provide it, have a screenshot from details with all of it.