Skruuia, Spirit of Scorn in the Cookie Clicker Pantheon has the downside:
All golden cookies are wrath cookies with a greater chance of a negative effect
By how much is the chance of a negative effect different from usual? This detail isn't documented in the Cookie Clicker wiki (which for most other things is quite detailed).
Best Answer
Skruuia adds "Clot" and "Ruin" each twice into the list of potential wrath cookie effects.
If we make a simple example, like 4 other positive effects in the list (Lucky, Elder frenzy, Cookie chain and Cookie storm), then the chance of getting "Clot" or "Ruin" raises from 33% (2/6) to 60% (2+4/6+4 = 6/10).