Corrosive MuckSpell 5
Source Pathfinder Player Core 2
Traditions Arcane, Primal
Cast

Range 120 feet
Duration 1 minute
Saving Throw basic Reflex
Area all squares in two 10-foot bursts.
You create two puddles of acidic slime that hinders the movement of anyone who walks through them. The area of each pool becomes greater difficult terrain. Each round that a creature starts its turn in one of the pools or enters a pool during a move action it's using, it takes 8d6 acid damage with a basic Reflex save. A creature that critically fails its saving throw also takes 1d6 acid,persistent. As normal, if a Large or larger creature starts its turn in both pools, it takes the damage only once.
Heightened (+2) Create an additional 10-foot burst.
Traits
Anything that doesn't list another rarity trait (uncommon, rare, or unique) automatically has the common trait. This rarity indicates that an ability, item, or spell is available to all players who meet the prerequisites for it. A creature of this rarity is generally known and can be summoned with the appropriate summon spell.
AcidEffects with this trait deal acid damage. Creatures with this trait have a magical connection to acid.
ConcentrateAn action with this trait requires a degree of mental concentration and discipline.
ManipulateYou must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.