Black Tentacles
4th-level Conjuration
Concentration
Casting Time
Action
Range
90 feet
Duration
Concentration, up to 1 minute
Components
V (Verbal)
S (Somatic)
M (Material)
Material Components: a tentacle
Description
Squirming, ebony tentacles fill a 20-foot square on ground that you can see within range. For the duration, these tentacles turn the ground in that area into Difficult Terrain.
Each creature in that area makes a Strength saving throw. On a failed save, it takes 3d6 Bludgeoning damage, and it has the condition until the spell ends. A creature also makes that save if it enters the area or ends it turn there. A creature makes that save only once per turn.
A creature can take an action to make a Strength (Athletics) check against your spell save DC, ending the condition on itself on a success.
Each creature in that area makes a Strength saving throw. On a failed save, it takes 3d6 Bludgeoning damage, and it has the condition until the spell ends. A creature also makes that save if it enters the area or ends it turn there. A creature makes that save only once per turn.
A creature can take an action to make a Strength (Athletics) check against your spell save DC, ending the condition on itself on a success.
Source: SRD 5.2