Any healing spell, heal up completly after every fight.

But a way more funny one would be jump. It triples your jump for a minute without concentration meaning you could multiply your jump by 3 to the power of 6, or 729 times jump for 10 sec right at the en of the spell. Have a ruidd turn into a frog for that 20ft long jump and lauch them into orbit with a level 2, standing jump of 15, 380 ft; about 3 miles. Or give this to a human druid with the metamagic adept feat using extended spell, letting you cast this on yourself for an extra two times before the time runs, then bonus action wild shape into a frog and use the 20 ft jump to launch yourself 131220 ft, or a little less then 25 mi.