You instantly receive a +1 to your Dexterity and Strength score. (Add Manually)
You are now resistant to Bludgeoning, Piercing, and Slashing from Nonmagical Attacks.
You may now, as an Action, cast Enlarge Reduce on yourself at will. (You may not go from small to large - you must use an action between sizes) Your speed doubles when enlarged and halved when reduced.
You are now Immuned to being Frightened.
You have access to the Leviathan's Roar: (Recharged during long rest)
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Leviathan's Roars
Battle Cry: As an Action, you may Roar as a Battle Cry empowering your allies and yourself. Up to eight creatures, including you, in 120ft of you have Advantage on their next attack rolls until the start of your next turn.
Fearsome Roar: As an Action, you can force an enemy within range (120ft) to make a Wisdom Saving Throw using your Spell Save DC. On a failure, the creature is frightened by you for one minute. They may repeat the saving throw at the end of each of their turns. Creatures immune to fear are unaffected.
Bolstered Roar: As an Action, you can Roar and up to 8 allies in range (120ft) may add +2 to their AC until the start of your next turn. (Does not work on yourself).