I know that one can restore a shrunken object to normal size. This is not what I'm asking about. Why is there is no spell to allow one to Enlarge an object beyond it's original size? Am I just missing it in the books? Surely the game designers couldn't have overlooked this idea, especially considering such a spell did exist in 2nd Edition AD&D.
I could simply houserule in a reversed wording of the Shrink Item spell, but I wanted to know if I had somehow missed an existing spell or if there actually was a valid intentional reason for omitting this spell concept.
There were too many problems with people throwing objects at enemies and enlarging them mid flight.
It was possible in 1st edition with the Enlarge spell. It was even one of the suggested tactic, turning rocks into boulders once tossed.
Later this got removed, which led to druids summoning whales to drop on people. Then there was the line about only being able to create animals in environments which can support them. The current workaround for this is to get a flying carpet, summon a celestial buffalo atop it, then pull the rug out from under it or otherwise engage in celestial cow tipping.
The Mount spell can also be used to the same effect.
Given all that, I'd just let Shrink Item be reversible or allow a hypothetical Enlarge Item. Saves trouble.
Revive.
Technically shrink item is worse than the possibility of enlarging an item mid flight. Shunked items are 1/16th their original size and you can dispell the effect mid flight.