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.
Evard's Black Tentacles
Level 4 Conjuration · Concentration
Casting Time1 action
Range90 feet
DurationConcentration, up to 1 minute
Components
V, S, M (a tentacle)
Material: a tentacle
Spell Description
Each creature in that area makes a Strength saving throw. On a failed save, it takes 🔨 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.