if you cast it on the mount then you are being worn and carried so I think unless there's some rule against this you would also grow to the same size as your new mount

dude you are such a lifesaver me and my friend were having a talk if  a Target could be affected by a in large reduce more than once and they kept telling me to go look at the errata and then I looked in here and you gave me the ability to go find it thank you so much

Have multiple people cast the spell on the same target. It doesn't say that it doesn't stack, so stack the shit out of it.

The spell already reduces the target to 1/8th the weight, and half the size, I agree with the higher level casting suggestion if your DM is willing to homebrew

Quote from OutrageousBear >>

Have multiple people cast the spell on the same target. It doesn't say that it doesn't stack, so stack the shit out of it.

I hate to burst your bubble, but it doesn't say it in the spell description because there is a general rule in the Player's Handbook section on spellcasting that says that the same spell cast multiple times on the same target does not stack.

Did druids used to be able to learn Enlarge in earlier versions or...?

*me a small creature*

dm: "as you look upon the nearby cliff you see a key hanging on a little crev..."

me: i'd like to cast reduce, then use mage hand to carry myself and fly up to it

dm: that isn't possi...

me reduce makes you tiny and makes you weigh 1/8th as much and since i'm small i weigh 5 pounds now, and mage hand can carry 5 pounds

Have seen this, you can use this to reduce your weight to almost nothing and them Mage Hand away.

Quote from TheBookworm53126 >>

Have seen this, you can use this to reduce your weight to almost nothing and them Mage Hand away.

This spell reduces the target's weight by a factor of 8, and Mage Hand can only carry 10 lbs. So you would only be able to do that if you normally weigh less than 80 lbs. I suppose a smaller creature like a Gnome might be that light.

Quote from Nereze >>

 If you use this on a mount and your riding it, do you grow too?

 With Find Steed, you can make Enlarge/Reduce apply to both you and the steed.

Quote from OboeGotNoElbow >>

Quote from Nereze >>

 If you use this on a mount and your riding it, do you grow too?

 With Find Steed, you can make Enlarge/Reduce apply to both you and the steed.

That's true, though I don't think it would apply to mounts in general. And even in that spell it has to be you casting the Enlarge/Reduce for that to work, so you'd need to multiclass or something to get access to both spells.

Hey could you use this spell on a grey render to make it smaller? So instead of being big and causing damage it would be small like a dog and do less damage.

Quote from Wizzardboi574 >>

Hey could you use this spell on a grey render to make it smaller? So instead of being big and causing damage it would be small like a dog and do less damage.

Yes. The thing about the target's weapons doing less damage applies to natural weapons like claws and teeth.

my campaign is using this to carry them around with mage hand

If an artificer stored this spell in an item using their spell storing item ability would the artificer specify if it enlarges or reduces at that time or can the character that uses the item decide when the activate the spell?