... Oh, hi there!
Did not expect your visit! This potion I made is for PVP! If your server has a in-game PVP shop, maybe have a PVP Crosser for sale! Maybe for $500 or 1000 PVP tokens or whatever. Maybe if you could have 1 at a time in a players storage until use? Yeah, then it would be legendary... This. Is. Too. Op. so..... give it a more reasonable price...
... or maybe don't have it at all people may hack then come back when unbanned and use what they earned to buy them which will make them op