Captain Alessandra Shaw

Leviathan's Blessing. Worship of one of the Gods of the sea, the Leviathan, has brought a great many gifts to Aurora. She can breathe underwater and has advantage on saving throws against spells and other magical effects whilst at sea.

Legendary Resistance (2/Day in Lair). If the Capt. Shaw fails a saving throw while on the Hellshark, she can choose to succeed instead.

Cutlass of the Depths (3/Day). Captain Shaw's Cutlass acts as her pact weapon. Once per turn when she hits a creature with this weapon she can use one charge to deal an extra 1d6 necrotic damage to the creature.

Multiattack. Aurora makes three Cutlass Strike attacks:
Cutlass Strike. Capt. Shaw makes a melee attack with her Cutlass of the Depths using her spellcasting modifier plus two. Attack: +5 Damage: 1d8 + 2

Spellcasting. Aurora is a 17th level spellcaster, spell attack roll +11, spell save DC 18, and has the following spells prepared:
(Cantrip): Chill Touch, Eldritch Blast (3 beams)
(1st Level, 4 Slots) : Arms of Hadar, Cause Fear, Bane, Hex
(2nd Level, 3 Slots) : Hold Person, Misty Step
(3rd Level, 3 Slots) : Hunger of Hadar, Counterspell, Wall of Water, Drown
(4th Level, 2 Slots) : Watery Sphere
(5th Level, 2 Slots) : Maelstrom

Rising Vortex (Recharge 6). Shaw rises on a 30ft. tall, 5ft radius towering spout of swirling seawater provoking no opportunity attacks, the vortex moves with her and 1.5x her movement speed, though it remains 30ft. above the surface directly beneath Aurora. Creatures the vortex moves into or that start their turn in it must make a DC 18 Strength saving throw or take 2d8 bludgeoning damage and be restrained and move with the vortex, or taking half damage and being ejected in the nearest available space on a success. Skeleton Crew Skeletons and creatures large or greater are immune to this vortex. The vortex dissipates slowly at the end of her next turn, dropping Aurora at the base and all restrained creatures 10ft. away.

Skeleton Crew. Whilst on the Hellshark, Capt. Shaw can summon up to 3 Pirate Skeletons at the start of each of her turns as a bonus action, anywhere within 15 feet of the Hellshark. She can command them as a free action during her turn. If Captain Shaw successfully uses counterspell, she can summon 2 Pirate Skeletons as a free action. She cannot have more than 10 Skeletons active at once, and usually has 4 patrolling at any one time.

Arcing Parry. Shaw gains +2 to her AC against one attack, and if this causes the attacking creature to miss, Aurora may make a Cutlass strike attack against them.

Legendary Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, the lich can expend a use to take one of the following actions. The lich regains all expended uses at the start of each of its turns.