[Found] Humorous Avengers AU
I'm looking for a fic that is a few years old. I think it was written shortly after the first Avengers movie. It is an AU fic where Loki is part of the Avengers just like Thor. Loki gets sick and his magic goes wonkey. I know it causes Thor to shrink down to Barbie Doll size and Bruce gets turned into a guinea pig. I remember that in one scene Thor is riding about Avengers tower on Bruce, declaring him a Mighty Steed. I think the wonkey magic also caused a love spell to fall over Tony so that anyone who looked at him fell in love or lust with him.