Corrupted Surprise Boxes are really weak

[Ekallo]

I get that they are supposed to be random but the fact that the negatives double from corruption is pretty awful. They should remove or at least halve the negatives in the corrupt version.

Or considering the buffs/debuffs aren't that impactful to begin with, a stronger and more fun version could be something like:
"Combat start: All heroes gain one of these: 2 stack <buff>
All enemies gain one of these: 2 stack <debuff>"