Prerequisite(s) kinetic cover
Saving Throw none; see text; Spell Resistance no
You can manipulate massive quantities of water. As a standard action, you can raise or lower the level of water as if using control water, or move an amount of water equal to 1/1,000th the amount controlled by that spell to a different location in range.
The water remains where you placed it for as long as you remain motionless and take a standard action each round to concentrate on this effect. This wild talent causes a slow effect on creatures made of water, just like control water (Will negates). When you cease concentrating, the water flows normally unless you accept 1 point of burn to extend the duration and hold the water in its current position for 10 minutes per kineticist level you possess.
You call up elemental matter to defend yourself and your allies from attacks. As a standard action, you can select one face of a square within 30 feet of you and move elemental matter to block that face, providing total cover from that direction. The face you select must be supported by the ground, and the kinetic cover cannot support more than 5 pounds of weight. Water, ice, and telekinetic force are translucent, but earth, metal, mud, and the like are opaque and block line of sight. A creature who strikes the cover can easily destroy it. Regardless of its composition, the cover has hardness 0, AC 5, and 2 hit points per kineticist level you possess. You can have a number of kinetic covers in existence equal to your Constitution modifier + 1/2 your kineticist level.
What can i do with these two in combination?
examples:
1)Can i raise the cover to be several blocks tall?
2)Can i lift and move a kinetic cover(water) wall to somewhere else?
3)Can i lower it with the intention of releasing the manipulation for a popup wall?
1) I'd probably rule no, at least for simplicity's sake. You can move the water to a new location, but i don't think you can stretch it to cover a greater area. Even if you could, it would have to weaken the wall somehow, since you'd be stretching it thin.
2) Yes
3) I'm not entirely sure how this would work, but I'd rule no. I think i see what you're going for, but i think that would require a greater amount of control than i read water manipulator to allow.
All that said, talk to your gm, because they might allow more flexibility with water manipulator than i would. It would certainly make some cool visuals, at least.
according to the spell:
'This spell has two different applications, both of which control water in different ways. The first version of this spell causes water in the area to swiftly evaporate or to sink into the ground below, lowering the water’s depth. The second version causes the water to surge and rise, increasing its overall depth and possibly flooding nearby areas.'
from this i gather that it must be creating more water to "increase the depth" (as opposed to lifting a body of water off the ground to raise its height) which seems like it shouldn't weaken the wall, just add more to it.
Just trying to see what everyone's opinion is, will alsoask my gm though