Why is my voodoo taking damage vs Void with no debuffs

I enter the fight with voodoo against void in uncollected difficulty and I am instantly receiving lots of damage, 40% of my health is gone in less than 10 seconds.
0
Comments
Last month it was quick, better do the same this time
Weed liek yu ol 2 no dat dis iz werkin as inteded! -KabamMiike