Added a few more 1st level spells (glue seal, blade lash, thunderstomp, wave shield, windy escape, reduce person, silent image) and 2nd level spells (euph cloud, pyrotech, def bone, stone shield, raven's flight, river whip).
Thanks, that's a useful source!
As a Magus-only spell, it should clearly be on the list. +2 AC and those skill bonuses are not so great for a 3rd level spell; its main aim is to prevent an enemy from getting away from you. However, since the cord is 30', he'd still be in range of your allies. I'm having trouble imagining a situation where this is actually useful; I wouldn't generally want to spend a spell slot on this.
By my reading, spell combat is indeed "one or more actions or feats that apply penalties to attack rolls with your melee weapons", so BTS should remove its penalty.