The water bonus of the Founder's Staff massively increases the knockback of water spells.
Very good (and funny) use:
-Channel 1Rock 4Water
-Cast on your self while walking forward
This will let a Rock fall from above right behind you and create a big water AoE that sends you flying forward.
With the founders staff this spell will basically always shoot you far enough to hit the next
level border.

Forget Warlock rob

Bonus to water is not (no effect) it increases knockback

How could anyone take a Magicka guide seriously that says 'Bonus to Water (no effect)'?
This is clearly just a copy of previous guides outside Steam.

mushroom robe where?

the robes let you noclip through spell walls

I believe some dlc staffs were nerfed. Also missed a bonus on Robe of Riviera

the bonus to water is a real insane thing, especially on the founders staff. if you can, try to get a friend and area cast on them - theyll fly away into the stratosphere.

Both the founder's wand and Duck wand's bonuses to water actually increase the knockback. I tested with both on Chapter 1 and was able to find that using a non-bonus wand to cast dqqqq starting under the first banner's shadow and aiming to the bottom left of the screen, you can launch to slightly past the jester. The duck and founders wands, however, both had the same increased knockback and using the same setup, launched me around 3 times the distance to just next to the second banner. Both the duck and founder's wands are the same. Also of note was that the Olde root was able to travel around 1/3 the distance. The training wand's distance was very small if not an error, so I think that it isn't affecting it.

@Eevryone_ It's a reference to Game of Thrones, Nights Watch.
- What it does in game is it allows you to walk through summoned physical walls. They crumble when you walk against them.
- It can be useful against some of the enemies that make walls, then charge at you. these enemies can walk through those walls, This robe lets you also walk through those walls like they do.