[Valerius]

At the very least the description is misleading. I was always under the impression this spell was bugged but then seem to recall something about it being fixed. Regardless, I ran a score of tests and (assuming the target was actually affected and didn't just fall to the ground as they sometimes do) in each case the target only moved one province. So you could use it to set a trap (anticipating where they'll land) or remove a commander from a battle but it won't just transport them to your caster's province (unless of course you're only one province away).

Edit: it is worth mentioning that when the commanders fall to the ground they take damage. Not sure how much, but 11 HP, 0 prot dryads were consistently dying in my tests.