Looking around and seeing the raging battle all over Dex realizes the most prudent action is to finish the most immediate and dangerous foe.  He continues to fend off the abomination and takes another swing with his mace.  

Attack: 16 Damage: 4

The attack hits and continues to injure the shark abomination

Ridani attacks with her longsword

Attack: 7 Damage: 11

Round 4

Dex gains 4 additional temp hp

The Shark abomination gnashes its teeth in anger and attacks Dex

Attack: 16 Damage: 12

Its Dex's Turn

Grunting in pain as the shark abomination's teeth slip between the scales of his armor.  Smashing with his shield to cause a diversion he swings his mace at the creature again.

"By Avandra's name back to the sea with you!"

Attack: 20 Damage: 5

The shark abomination dodges Dex's attack

Ridani attacks with her longsword

Attack: 13 Damage: 9

Round 5

Dex gains another 4 temporary hp

The shark abomination dives for Dex's leg intent of severing his limb

Attack: 19 Damage: 8

It Dex's turn

The Shark abomination landed a critical hit. Dex is wounded and unconscious

(Usually at this point you would roll a death save, but Ridani will heal you with her spell)

Seeing this Ridani rushed over to your side and casts healing word - healing energy enters Dex's body

Healed

6

Round 6

The shark abomination attacks Ridani as she tries to shield you from its attack

Attack: 16 Damage: 13

It Dex's Turn

Ridani cries out in pain as the shark abominations attack has left a bleeding gash on her side. Blood flows from her wound as she presses her hand against it in hopes of slowing down the blood loss.

Can a move be made to disengage and still use a spell attack?  Hoping to get moved back far enough to use a ranged spell without disadvantage.

No. Disengage would be using your action. You can disengage and cast a spell if it can be cast as a bonus action.

You don't need to cast with disadvantage as Ridani faerie fire is till in effect. Advantage negates Disadvantage so you can cast the spell normally

Knocked to his knees by the brutal attack Dex feels the power of his deity flowing.  He stays kneeling and makes a desperate attack to down the abomination.  He holds his holy amulet and points to the creature.  "Estver goldhiem encesti!"  A brilliant light streaks from the amulet to the creature.  Casts guiding bolt

Attack: 6 Damage: 19

And I always thought it was cursed dice on my end.....

Ridani lifts her sword in defiance and attacks the shark abomination

Attack: 18 Damage: 10

With that vicious slice Ridani kills the shark abomination. Captain 3 Earrings and her crew were able to route the other enemies. Some of the crew are severely injured or unconscious.

End of Combat

What do you do?

Dex rapidly starts to examine the crew and will attend to healing however possible.  If anyone is unconscious he will use a spare the dying cantrip to buy some time.  After that he will find the worst of the injuries.  Once he finds that crew member he nods his head and speaks a curing phrase "Findal ol rrin" and looks to the member.  A faint glow is present for a moment as he channels Avandra's power into a healing.  (uses channel divinity to heal 10 HP)

He goes and finds 3Earrings.  "How long before land fall and a time to rest?  I have nearly exhausted my abilities for the day.  With some time I can bring more to better health but it will take some time to heal everyone."

"We will make it to the deserted town in a 15 minutes." Captain 3 Earrings takes the helms herself barks orders to keep watch as you docks at the still standing half of Palma Flora. She finds you later "Get some rest we are going to go right into their lair soon enough." She has crew members on shift to keep a close watch on the ocean.

(You can click on the long rest button and you will awake at dawn the next day. You can explore the town or be ready to dive beneath the waves)

(You have leveled up to level 3)

Dex will check the rest of the crew and get as many healed as he can before resting.  Once rested up he finds 3Earrings.  " Shall we explore the rest of the city before we move to the lair?"

He will take a few minutes minimum to check out some of the island that is left before returning to the ship to get ready to move on.

8

Hit point roll

Captain 3 Earrings says "We have a bit of time, but you should get underwater soon."

Please roll perception to do a quick survey of the town

Perception

8

Pretty amazing hit point rolls both levels, I am going to end up operating like a mage or get really good at healing I guess.

You find breastplate medium armor, warhammer, and a shield in the local smithy. In the apothecary you find 1 health potion.