Release the Kraken
Tier 3 Epic conjuration
Casting Time: 1 action
Range: 300 feet
Components: V, S, M (a kraken’s heart)
Duration: Concentration, up to 10 minutes
You conjure watery tentacles in eight unoccupied 10-foot squares on the ground or in water that you can see within range. Each tentacle is an object that fully occupies the space with an AC of 18 and 200 hit points that lasts for the duration or until reduced to 0 hit points. When a creature starts its turn within 50 feet of a tentacle and the tentacle is not grappling another creature, the tentacle makes a melee spell attack against that creature. On a successful hit, the creature takes 6d6 bludgeoning damage, and Huge or smaller creatures are grappled and restrained (escape DC equal to your spell save DC). If a tentacle is grappling a creature, the tentacle cannot attack any creature other than the grappled creature.
As an action, you can command all active tentacles to attack a creature, object, or structure you can see within 50 feet of each of them. Tentacles not grappling foes make a melee spell attack against any targets, dealing 6d6 bludgeoning damage on a successful hit and grappling and restraining Huge or smaller targets (escape DC equal to your spell save DC). Tentacles which are currently grappling creatures when you command them to attack instead fling the grappled creatures 120 feet in a random direction, dealing 12d6 bludgeoning damage and knocking them prone.
Ref: ELCR p102