Casting Time: 1 action
Range: 90 feet
Components: Verbal, Somatic, Material
Duration: Concentration, up to 1 minute
Material: A piece of tentacle of an octopus or a giant squid.
Dark writhing tentacles occupy the ground in a square of 90 feet ridge you can see the range of the spell. For the duration of the spell, the tentacles make the difficult terrain.
When a creature enters the affected area for the first time in a turn or where it begins its turn, it must make a dexterity saving throw or it suffers 3d6 bludgeoning damage and is hampered by tentacles until the end of the spell. A creature that starts its turn in the area and is already hampered by the tentacles suffers 3d6 bludgeoning damage.
A creature hampered by the tentacles can use his action to a test Strength or Dexterity (at its option) opposite to the SD backup of your fate. If successful, it is free.