Side effects of magic, especially mindmagic and lifemagic. Dwarven Magic has its own safeguards built in for the practitioner.

In the case of positive, healing magic, splashback is primarily beneficial. Mindhealers become saner and more mature, healers are healthy and live long lives. Maliciously meant magic, though, even if it skirts the Protocols of Hesh, tends to lead to negative splashback, in which the caster gets the consequences they intended for others.