|Heroic Action Role-Play|
A geas absolutely prevents you from or forces you into doing certain things. Some vampires cannot enter a dwelling unless invited inside and devils cannot go onto holy ground. A cursed oathbreaker might be geased to seek out those she harmed and take on a mission from each.
It is normally impossible for you to break this geas on your own, but if forced or fooled into breaking your geas, you lose the use of all your Powers until you have somehow atoned or the end of the adventure.