Rhonda, I don't know if it'll help with your writing or not, but a geas can also take the from of an obligation that can create a conflict for your character. By way of example, the Irish myth figure Cuchulain laboured under multiple geasa. He was forbidden to eat the flesh of a dog, but was also obligated to never refuse a feast. When the baddies invited him to a feast at which boiled dog was served, it caused him no end of trouble.
Boru
Boru
‘I can’t be having with this.’ - Esmeralda Weatherwax