Sludgy Sling is a 
Action. You can use this ability to deal damage to creatures around you as well as cover the area in a Mud surface.
Description
Overwhelm creatures with painfully heavy sludge, miring the area around yourself in thick mud.
Properties
- Cost:
-
Action - Damage:
-
2d6 (2~12) 
Bludgeoning damage - Details:
-
Attack roll -
Range: Self -
AoE: 3 m / 10 ft (Radius) - Creates Area: Mud
-
DEX Save (DC 13)
Area: Mud
Mud 
Duration: 3 turns
AoE: 3 m / 10 ft (Radius)
Difficult terrain - movement speed is halved.
Type: Surface
Condition: Difficult Terrain
Difficult Terrain- Movement Speed halved
How to learn
Used by creatures: Wild Shape: Earth Myrmidon