Summon a sudden flood of highly concentrated brine that crashes into a target area, corroding metal, poisoning enemies, and hindering movement. Creatures within the brine are slowed and take ongoing damage from its corrosive nature.
Non-magical metal can dissolve or become damage, up to GMD. This is represented by the -2 AC effect.
The flood surges, a thick, murky torrent of briny water. Metal hisses and crumbles, dark streaks forming as it corrodes. The ground slicks with salt, trapping feet, while the brine eats away at everything it touches.