User blog comment:VanishSpanish/Consequences of Psionics/Magick/@comment-29527260-20171010023010/@comment-29527260-20171010024043

Offhand, some more possible consequences:

1. Overestimating your own abilities

2. Mistakenly causing catastrophes from overpowered spells

3. Spirits may break things (faeries)

4. Anxiety and existential crises (especially if messing with chronokinesis from personal experience)