hehe funny

Not all that good. I'm not sure how it 'deals damage' but incapacitated isn't that hard to get. 

Paralyzed, Petrified, Stunned and Unconscious all include Incapacitated as part of the condition, which makes Hold Person inherently better. Plus the fact that it doesn't scale makes Laughter terrible for Warlock spell slots.

This spell is a niche low level option for utility casters and not much else.

I swear, I thought that said "tiny farts." I was thinking a Whoopie Cushion, maybe?

Regardless, what are tiny tarts? They're not talking about horny halfling women, are they?

Tart [n]

• Slang for a prostitute or more generally a woman who is promiscuous or dresses or acts in a sexually provocative way

As far as I can tell, this is a save-or-suck spell to flying creatures. I'm pretty sure that if a flying creature (without hover) failed it's saving throw it'd fall to the ground from the prone. If so, that's a hilarious use for a 1st level spell. Sure it's range is only 30 feet, but that's still useful if you're also flying, or if you're on a cliff and they aren't.

Looking for some help.

Making a Witch the BBEG in an upcoming campaign. 

Is there any way or other spells like this that can affect large groups/crowds instead of one person?

I am thinking of introducing my BBEG during a town fair with the PCs having a lovely time with no worries and then having the whole town be affected by this spell for extra scariness. 

Any ideas? Thank you! 

My bard took this spell as a way of dealing with potential hecklers.

what are tiny tarts

like ha ha ha ha ha ha hA  ha

how would you calculate the damage from the spell?

theoreticly as long as the enemy  dosent go higher than 30ft you can technicly force a flying enemy to take a little bit fall damage if you use this on them while they are flying