Otherworldy Madness

By channeling your magic, you open your mind beyond your understanding of reality. You pull arcane energy from somewhere beyond, and sometimes pull something along. A flash of an image, a hint of a vision or a whisper of a sound so alien to your mind that it can break it.

Madness rolls:
Each time a leveled spell is cast, roll 1D20.
If you roll equal to or lower than your madness counter, roll on the madness table.

Madness counter:
Your Madness counter starts at 1.
With each succesful Madness roll, add 1 to your Madness counter.
With each unsuccesful Madness roll, your Madness counter reverts back to 1.
Each long rest you can calm your mind and proces what it is you saw or heard whilst casting magic. Roll 1D4 and subtract that from your Madness counter. You cannot go below 1.

Madness table:
Spell level 1 and 2: Roll on the Short Term Madness Effects Table
Spell level 3 and 4: Roll on the Long Term Madness Effects Table
Spell level 5 and higher: Roll on the Indefinite Madness Effects Table