That's just bad luck. I pulled some Toxic gear today. And in the last week I pulled a number of 5 star epic toxic attachments with excellent %-based stats. Funny how these things come in cycles 

shaun9496780 said:

Is there some kind of bug with loot from Dragon dungeon? 

I have used about 1500 energy in the last 3 days only on dragon and not a single piece of Toxic loot has dropped. Have they stopped this set dropping here and not informed us?

Hello

No its definitely still there, just bad luck, im trying to farm speed gear and lifesteal gear but im getting everything else including toxic.