Quote from nightcatmon >>

Granted, a sixth toe appears on your left foot, but the sudden growth of the sixth toe has mixed up the veins, bones, and muscles on your left foot, leading your left foot to lose all function forever.

 

 I wish for this wish to make the exact opposite outcome of what the next person would say.

You monster!

I wish for the wish above me to have the exact same outcome.

Wait.... isn't that technically a loop between you two forever, or do I get to decide what happens? I'm confused..

I wish for an extinction event on this planet that humans are on.

Humans destroy the planet, which off balances the specific number of planets required to exist at a given time and causes the universe to self destruct.

I wish I would be transported to another dimension to avoid being reduced to nothingness.

 Granted, you are transported into another dimension that is identical to the original one, the only difference being that the 'You' in this dimension hasn't wished for their wish yet. 

 I wish that the next comment will tell me the answer to the universe and everything.

Granted, it's 42. However, in order to understand this answer, you must also learn the ultimate question of life, the universe, and everything.

I wish that clouds looked cooler.

The clouds look so cool everyone you know leaves you to see them. 

I wish for a dnd group that don’t leave after the first session and come to the sessions.

 Granted, now Earth has reverted back to its primary state where the whole atmosphere is filled methane and diverse clouds that create immense lightning on almost every minute. Most creatures will die because of it but hey, at least the clouds are cool!

 I wish for the ultimate question of life, the universe and everything.

Granted. You now know the question, but not the answer.

I wish to experience pure euphoria.

Quote from nightcatmon >>

 Granted, now Earth has reverted back to its primary state where the whole atmosphere is filled methane and diverse clouds that create immense lightning on almost every minute. Most creatures will die because of it but hey, at least the clouds are cool!

 

 I wish for the ultimate question of life, the universe and everything.

You are unable to comprehend it, and you feel your mind reeling from the new information that you can't understand. You must make a DC 15 Int. save each minute or take 2d4+5 psychic damage.

I wish that I didn't almost forget to make my wish.

Granted. The timeline is now shattered and we are all hauled off by the TVA.

Again, I wish to experience a reasonable but not deadly amount of euphoria.

Granted but, since is a reasonable ammount of euphoria, I dare you to roll a CON 18 DC saving throw. On a success, you only suffer hiccup, which it gonna lasts 10 mins. On a fail, you gonna suffer a painful heart attack. 

I wish I could take a sip view over the The Epic levels core Rulebook D&D 5ed.

Granted, but it's in a language you don't understand. As you try to decipher it you descend into a gibbering madness.

I wish for a new set of dice.

Unfortunately, one of those dices is a Mimic. Good luck if your hand is being eated by the Mimic............

I wish for a new Gospel chorus.

Granted. They are horrible.

I wish for common sense

Granted. Now you lack in uncommon sense.

I wish for your swagg.

 Granted, 'Loki_King_Of_Jotunheim' obtains swagg, but the natural laws of homeostasis and swagg preservation makes YOU lose swagg, and at the same time makes him lose swagg every few seconds later. You two are now bonded forever to gain swagg and lose swagg in every 5 seconds.

 I wish that all existence (Energy, matter, concept, information....) would turn into nothing when I get influenced by literally anthing else except myself.

Granted. Existence includes you. 

I wish for a regular dnd group so I can finally DM my ToA module 

It ends up going well. But there are often scedualing conflicts.

I with for the powers that my OC has, without me turning fictional.

Granted, you become a d&d character and now you can only be active while a d&d session with you as a character is active. (And you will be constantly put into trouble by the DM who is determined to kill you)

I wish for the next person to not find this text and think that I wished for nothing.

Granted. The person named "The next person" doesn't find the text and thinks you wished for nothing.

I wish for death.