So, we get things like runestaves, sandshaper, fiend-blooded, bloodlines and mother cyst, but what other ways are there to increase spells known for a sorcerer. I read something a while back about a feat or ACF that let sorcerers switch spells known for others regardless of spell level and wanted to use it with the other spells known booster, but I do not remember what it was called or where to find it.