Charming Aura

When this spell is cast, a magical aura will surround the caster.  Anyone that steps into the aura (it is 5 sq. ft. surrounding the caster) they will become charmed.  This spell can be cast as a 3rd level spell.  When cast as a 3rd level spell, the aura will increase to 6 sq. ft. and the duration will become 2 hours.  When cast as a 4th level spell, the victims will be very agreeable and suggestable.  When cast as a spell higher than four, it will increase the duration to 3 hours and the range will become 1 more sq. ft. for every 3 levels above 4.