All 3rd-edition harper agent spells of 3rd level.
“Suggestion was an enchantment spell used to compel a subject to follow the caster's orders, but...Suggestion
“Clairaudience/clairvoyance was a divination spell that allowed the caster to put an invisible...Clairaudience/clairvoyance
“Tongues was a divination or alteration spell that allowed the caster or a touched creature to...Tongues
“Nondetection (or non-detection) was an abjuration spell that hid the subject from divination and...Nondetection