I just noticed that this makes it pretty useless when compared with expeditious retreat.
Both 1st level spells, both same duration (1min/level), but until you reach 5th level exp. retreat beats jump hands down.
+30ft move *also* gives you +12 jump automatically! Compare that with +10 from the spell that is all about jumping and it seems a bit loony.
The only thing that Jump has that exp. retreat doesn't is that you can cast it on a friend. Apart from that it seems feeble in comparison.
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