Thread:Natsu11/@comment-3544775-20130720143634

16th page is King using his spear to pierce Ban. Also in the whole chapter, not even once they showed the cup. If you talk about the King's flashback and him coming back, then that's not the cup. It's the thing the cup was put on and the dried lake which the cup created. So it's not a proof, since you haven't seen the cup.

That kind of assumption is equal to speculation, because like you said, you aren't given the exact manner of his ability, but you jump on conclusions. And Wind Manipulation, puts him in totally different ability group, while keeping it with Tornado/Twister/Spin or something of that manner, keeps it much more precise, until his ability is confirmed. Otherwise if a character shows and uses 1 fire attack, you will say it's Fire Manipulation?

edit: And looking at that page of King's flashback, it also states: "The Fountain of Youth, the cup of water that gave life and never ran dry...". This statement makes it look like the cup can never dries. 