Looking around at stuff, if I wanted to make Greater Magic Fang permanent, I would need to be a level 5 druid and level 9 wizard? At a minimum? I know in 3.5 there existed feats that let you take spells from other classes, do any such feats exist in Pathfinder, or do you have to be a level 14 multiclass character to cast a permanent Great Magic Fang?
You can use Limited Wish to cast a Druid spell as a Wizard.
Ah, that'd work, yeah. Neat. Thanks.
You can also find a druid and get his cooperation.