I came across a Ring of Wishes with one wish left. I want to wish for a paladin only weapon. I wanted to reach out and ask for help on wording the wish where it doesn't come with any complications or backfires. I never used a wish but I do know that players have to be very careful wording their wish.

Thank you for your input!

Don't worry about wording. Talk to your DM and tell them about your intentions. Maybe they can even make something custom for you.

I personally feel DM screwing their players out of their wishes is a lame move. It's not everyday a PC can make a wish, and as far as wishes go, yours seem VERY reasonable, and not game breaking.

Have a chat and see if what you both can come up with.

A Wish spell is always going to be susceptible to complications or backfires.  If you leave the spell vague, the DM can interpret it however the DM wishes. If you add a bunch of legalese, that only increases the number of points where the DM can apply interpretation. The spell is a bit of a trap, though how much of a trap it turns out to be depends on how good the DM is at twisting words.

Paladins in particular are open to susceptibility - they are already serving an Oath, and it is really, really easy to use Wish to drive a wedge between the Paladin and their Oath. 

So, while you could do something like “I Wish for a Paladin’s weapon that I am proficient in, is not cursed, has a +3 enchantment, deals 3d6 additional damage to the target on a hit, is not sentient, will not break, and does not have an effect, motivation, patron, or other conflict with my oath” covers many of the things a DM would think of if you just said “I wish for a paladin weapon”, that’s really only inviting them to try and come up with some kind of harm that is not covered by your list.

If you want to get specific, wish for a holy avenger, and specify the kind of sword you want it to be. I’m pretty sure it’s beyond the gp cost of the spell, but what are the odds you’ll get a chance to cast wish again, anyway.

If you trust your DM and are okay with a potentially cursed item, then go for it. For me, the idea of obtaining something powerful, but later discovering a hidden cost or curse, has great roleplay potential and just sounds fun. However, that's because I trust my DM and know that he would rule a wish well if we were ever to get it. To your question, either accept that there will be complications, and role with it, or work with your DM on an item that wish should be able to just auto grant you. 

One way you can use Wish without there being a chance of backfiring is using it to instantly replicate any 8th level spell or lower. I would recommend Find Greater Steed, which can get you a permanent and powerful flying mount.

Quote from Ophidimancer >>

One way you can use Wish without there being a chance of backfiring is using it to instantly replicate any 8th level spell or lower. I would recommend Find Greater Steed, which can get you a permanent and powerful flying mount.

I don’t understand this one. How would it be permanent? If the mount dies, you’d have to cast it again to get the mount back, and you no longer have the spell since you used it for your wish.
Plus, since the OP is looking for a paladin item, I’d assumed they are playing a pally, and can then just cast it as a class spell.

Quote from Xalthu >>

Quote from Ophidimancer >>

One way you can use Wish without there being a chance of backfiring is using it to instantly replicate any 8th level spell or lower. I would recommend Find Greater Steed, which can get you a permanent and powerful flying mount.

I don’t understand this one. How would it be permanent? If the mount dies, you’d have to cast it again to get the mount back, and you no longer have the spell since you used it for your wish.
Plus, since the OP is looking for a paladin item, I’d assumed they are playing a pally, and can then just cast it as a class spell.

Lasting until it dies and not being able to be dispelled is permanent, for a spell effect, but you're right they could eventually cast that spell themselves anyway after reaching level 13. Another use that wouldn't carry any risk is to use it to cast Clone. The clone would still need to be undisturbed for 120 days and protected after that, but then you have another chance at life if you die.

Dude, thank you!!!

Quote from Caerwyn_Glyndwr >>

A Wish spell is always going to be susceptible to complications or backfires.  If you leave the spell vague, the DM can interpret it however the DM wishes. If you add a bunch of legalese, that only increases the number of points where the DM can apply interpretation. The spell is a bit of a trap, though how much of a trap it turns out to be depends on how good the DM is at twisting words.

Paladins in particular are open to susceptibility - they are already serving an Oath, and it is really, really easy to use Wish to drive a wedge between the Paladin and their Oath. 

So, while you could do something like “I Wish for a Paladin’s weapon that I am proficient in, is not cursed, has a +3 enchantment, deals 3d6 additional damage to the target on a hit, is not sentient, will not break, and does not have an effect, motivation, patron, or other conflict with my oath” covers many of the things a DM would think of if you just said “I wish for a paladin weapon”, that’s really only inviting them to try and come up with some kind of harm that is not covered by your list.

 Dude, thank you!!