Titillating Tendrils

Radiant tendrils sprout up from the ground and fill a 15-foot square on ground that you can see within range. For the duration, these tentacles turn the ground into difficult terrain and will attempt to tickle any creature standing on top of them.

When a creature enters the affected area for the first time on a turn or starts its turn there, the creature must succeed on a Constitution saving throw or take 4d6 psychic damage and be grappled until their next turn.