Bloodline of the Kraken (Balanced)

You were born with the blood of the Kraken. You can take on a monstrous form that creates tentacles of water from your body when you need it most.

Once per long rest, you can take on your Kraken form for 4 rounds. Here are the abilities you can use:

• Torrential Downpour. When in your Kraken form there is a constant downpour of rain in a 60 ft radius that moves with you. All Fire damage rolls have a (–4). Lightning and Cold damage rolls gain a +2.  
• Oceanic Armament. Using a bonus action, you can douse a physical weapon in Raging Waves, making it do an extra 1d6 Bludgeoning damage every time it hits until your Kraken form ends.
• Whirling Escape. Using a reaction, you create a whirlpool to teleport to an unoccupied space within 60 ft. of you. Each creature that was within a 30 ft radius of your original location must make a DC (your spell save) Dexterity saving throw. Upon failure, the creature takes 4d6 bludgeoning damage. Upon success, the creature takes half the damage they would have taken if they had failed.
• Stormy Blast. Using an action, you cast a large, aerodynamic blast of electrical water up to 120 ft away from you. All targets within a 10 ft radius must make a DC (your spell save) Dexterity saving throw. Upon failure, the target is knocked prone (only if they are large or smaller) and they take 8d6 bludgeoning damage and 2d6 lightning damage. Upon success, the target takes half of the Bludgeoning damage (8d6) and no Lightning damage.
• Tentacle Grab. Using an action, you use your tentacles grab an enemy on a successful hit you deal 2d8 bludgeoning damage and grapple the target (escape DC 8 + your proficiency bonus + your spell modifier).
• Storm Cloak. While in your Kraken form, you gain vulnerability to Lightning damage but gain resistance to Fire damage.