Evard's Black Tentacles

D&D 2024 spell: Evard's Black Tentacles. Source: Player's Handbook (2024). level 4, school Conjuration, casting time 1 action, range 90 feet, duration Concen...

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 Restrained 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 Restrained 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: Player's Handbook (2024), p. 270 - Licenses and attribution