I mean should I? if so to what extent? I mean it can make the campaign boring if I all of a sudden become all-powerful, what are your thoughts?

Keep in mind the last few sentences of Wish:

The stress of casting this spell to produce any effect other than duplicating another spell weakens you. After enduring that stress, each time you cast a spell until you finish a long rest, you take 1d10 necrotic damage per level of that spell. This damage can't be reduced or prevented in any way. In addition, your Strength drops to 3, if it isn't 3 or lower already, for 2d4 days. For each of those days that you spend resting and doing nothing more than light activity, your remaining recovery time decreases by 2 days. Finally, there is a 33 percent chance that you are unable to cast wish ever again if you suffer this stress.

And if you wish to be all powerful, be careful of what you wish for.

Quote from Dogyman_360 >>

I mean should I? if so to what extent? I mean it can make the campaign boring if I all of a sudden become all-powerful, what are your thoughts?

 
The luck blade isn't OP for a Legendary item. You get 3 one-time uses of the Wish spell and once per day get to reroll a d20 roll. That's it. The reroll isn't abusive, and while useful isn't that great, especially since you have to take the reroll which could end up worse than the original. 

As for Wish? Multiple characters by this level of Legendary items, have access to this Spell for use everyday without limit. Having 1 to 3 uses isn't OP. You can replicate a spell - useful, but nothing game-breaking, or you can use the full effect which has downsides for you (like sapping all your strength) AND you have a 33% chance of never casting wish again - that includes through magic items, so you could lose the other charges unless you give the sword to somebody else and they can use the charges. Even those big wishes aren't much - a DM should be thankful, they're great story arc opportunities even without any "twist the wish" shenanigans.

No matter how powerful you become, the DM is more powerful can make enemies able to thrash you like you're a ragdoll. 

Very useful? Certainly.

OP / Abusable? Nope.

Since your question is "should you" not "could you" (which is no, you can't abuse it you only get to use as its intended which is nothing the DM cannot handle) I'd say yes, you should. The DM allowed you to have it. When the DM gives you something, you're free to use it. 

The only time I would use wish for non-level 8 spell purposes is to prevent a TPK. Also, remember that wish is not all powerful and a DM ultimately gets to decide what happens when you use it.

If you want to do something crazy and game-breaking, talk to your DM about it.

You probably can't "break the campaign" or "become OP" by a casting of wish since its special use is up to the DM.

One of my players has a luck blade with 2 charges. Thankfully my players don't abuse the things they have. There are limitations to the wish spell. So each use is going to be interesting and unique. I can't wait for when a wish gets used. It'll be a very fun conversation to have.

What the player can do with the wish spell is fully on the DM if it's allowed. So don't be surprised if the DM twists it against you for bad wording. Course maybe the DM grants that wish. You take your chances either way.

Being over powered will make things boring. I'd advise against that. Instead.. think of me fun and creative ways to use it which makes the session more fun maybe.

I wished to be able to cast any sorcerer spell of any level without needing spell slots, material components or concentration. my character is only level 1

If your DMwas foolish enough to give you a Luck Blade at level 1, that's on them. Just keep in mind that making yourself OP not only makes it boring for you, but also takes a lot of fun away from the other players.

What did your DM reply? :-)

I would have granted that wish, but everytime you made use of it you would have to roll on a "Cosmic Consequences" table including nice things like "A random creature within 30 feet of you dies", "Your equipment evaporates as the god like magic surges through you", "The uncontrolled, raw power rips open a rift to the Abyss and 1d4 demons appear", "An annoyed god of order sends a servant to rebalance the world"...

Maybe some positive outcomes as well. Basically granting you the power you wanted but making sure there was still a price to pay. :D

I would have granted it by making them a Sorcerer - Wild Magic, a surge happens whenever they cast a spell, they get Subtle Spell that also ignores material components and can use it free, but same restrictions apply - if they use a different metamagic they cannot use Subtle Spell, they can still only cast for their level. Happy to give them all spells as spells known, but they won't get any other Sorc subclass features. 

Seems interesting.

As a DM, first I would never give a Luck Blade as level 1 loot. For that specific wish: You are now True Polymorphed into an Archfiend or Diety and are an NPC.

Quote from Houligan >>

As a DM, first I would never give a Luck Blade as level 1 loot. For that specific wish: You are now True Polymorphed into an Archfiend or Diety and are an NPC.

 
I really don't like the idea of twisting everything about the wish, especially not to the point of taking away their character. If it was through a genie or something, sure. But when it's directly cast by the character (magic item or not) there's no reason to be like that. If you, as the DM, chose to gave Wishes to a low level player, then chose to punish them for using it - you're being a dick, plain and simple.

Yeah, thats true. This is definitely a case of "work with your DM to figure out what acceptable wishes would be"

I misread the thread title and thought this was about being mean to one's own equipment.

(One should take care of their equipment unless it's a cursed one with a loud mouth. In that latter scenario, get rid of it however you can if you can't shut it up.)