Firstly, as I always say, asking for legal advice on the internet is not a fantastic idea. In many countries you need be licensed to give legal advice otherwise you can be penalized. I am not a licensed lawyer. Nothing in this post constitutes legal advice in any way.
Secondly, copying an already-drafted EULA without knowing what most of it means or does is a terrible idea. Aside from the fact that laws are different from country to country and that it may refer to country-specific laws that don't apply where you are, there is the obvious fact that YOUR product is not THEIR product. The Futuristic Tiles EULA refers to the Futuristic Tiles pack, Enterbrain and their company, not you, your company or whatever you're selling.
Thirdly, not only is copying it a terrible idea, if you're concerned with copyright you would do well to be reminded that since copyright is automatically granted in most countries, whoever wrote the EULA for the Tiles pack likely still has the copyright over it (if not, then probably whoever hired them to write it). Yes, even legal documents can be copyrighted. So by saying you're just going to copy it, you would very ironically be committing copyright infringement yourself unless you got the permission of the original writer to use it. Even if you edited it afterwards.
Fourthly, even if this were not the case and you were able to figure out what that EULA effectively does, the Futuristic Tiles EULA is a terrible EULA to copy from. If you take a look at clause 2.2, it can mean, interpreted in a certain way, that you are only allowed to create a game with the resource pack if you only ever create games using RPGMaker engines in your lifetime. The idea behind it is probably meant to constraint use of the graphics to games made with RPGMaker engines, but it is worded so poorly I doubt it would be legally enforceable. Hell, it even directly contradicts its parent clause that gives permission to use the pack in any of Enterbrain's engines (like IG Maker). There are other places in the EULA that look very unprofessionally worded, so much so that I question whether the writer even had the qualifications to draft a professional legal document.
Only tangentially related, but the way it was implemented gives me doubts that the Futuristic Tiles EULA would be legally enforceable for a laundry list of reasons:
1. Because you need to buy the product before you can see it.
2. Because there is nothing that requires you to tick a box or physically agree to it before using the pack.
3. Because it is entirely possible for people to use the pack without ever even seeing the EULA due to the fact that it is buried in a readme that, even after opening, you actually need to scroll all the way down to find. And that's if you even look at the readme at all.
I'm aware this is a legally gray area, but from what I can tell this ticks alot of the boxes outlined in the cases where EULAs were found unenforceable. Most of those cases were US cases, though.
Lastly, (or TL;DR if you couldn't be screwed to read through all the above) find an actual trained and preferably licensed intellectual property lawyer to draft your license agreement if you're worried enough about it to need a professional document. Just remember that, EULA or no, it will be very unlikely to stop pirates from uploading it onto and downloading it from torrent sites if whatever it is turns out to be any good, anyway.
