L11E4: Marid 

OK, one more thing to say. Love how you handled the Invisibility Condition this fight. Thats exactly how it works on the tables im playing at now. You know its there but you get disadvantage to hit it. Some DMs will insist you cant hide underwater using Invisibility if one takes the Hide action but I always go with the minimalist approach and just handwave certain things. Its magic. Trying to then explain how physics interacts with it is kind of a moot point IMO because its basically nerdy theology and talk of "angels dancing on the end of a pin and how practical it is. I just look at Invisibility as a flawed "Preditor" clocking device that refracts light around it to make it blend in with the environs. The spell itself is also attuned to the subjects intentions and will try to refine its camouflaging capabilities to match that of the sneakers abilities to remain hidden. None of that is in the book but Jeremy Crawford mentioned the whole "Preditor Cloak" example when explaining why TS and See Invisibility still dont allow you to see the subject clearly enough to not have trouble hitting it - you just see it "better" as a more distinct outline and thus, its obscurement cover is blown and it cant hide from you. Anyhow, kuddos!

Probably late to the party but I think that the shark should not have disadvantage to hit the invisible Marid. Probably interpretable by the DM but my reasoning: An invisible creature is impossible to see without the aid of magic or a 'Special sense'. Blindsight should count for that 'special sense' part. and having a swimming speed gives no disadvantage to it's attacks. Still very cool underwater level and fight. Love the series. Keep it up.

I would have challenged that underwater caster ruling. DnD doesn't really mention a restriction to underwater casting but when it does, it mentions this rule as a suggestion: "While submerged underwater and holding its breath, a creature can cast a spell that requires a verbal component with a casting time of a reaction, bonus action, or action. After casting the spell, If the creature can’t breathe underwater, it immediately runs out of breath. The creature can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round)." Obviously the DM makes the final decision, but RAW and RAI say you can and the game developers intended for casters to be able to cast under water.

Really dug this encounter, interesting and difficult. Lots of tricky things going on both as a DM, and for the players but somehow it all worked out. What level are you playing to? Please say 20 if possible ;).

Good thing my Mystical Monk cast freedom of movement half an hour ago because now at the start of the turn she can: Action - Dispell Magic on the vortex. I'm not slowed down due to FOM. Long lasting non concentration spells rock and are never wasted. Bonus Action - Bladesong (+2 AC) Rd 2 - Quicken Haste dive in and dash 120 feet while taking the dodge action. Gets slammed with a Water Jet but has advantage on Dex saves with a +5 and....fails. Takes 28 damage but uses Bastion of Law to absorb the damage. Wow! Nice! I rolled a 31 on a 5d8 roll, that means I absorb all the damage and don't have to make a concentration check. Rd 3 Action Dodge move 60 feet Haste Action attack with a longsword as a dedicated Monk weapon using my dex with no disadvantage on my attacks because I'm a cool Monk that has Freedom of Movement. And then follow that up with an underwater headbutt +9 +9 to hit. Genie attacks me with a 28 but....oh right, disadvantage due to dodge so he gets lucky and still rolls high, a 27. And that's a miss, I cast Shield and with Haste and Monk AC, I'm rocking a 28 AC with disadvantage to hit and advantage on dex save attacks. Genie moves away, fighting like a smart coward. Too bad! I keep up with him easy, and then hit him with a Quicken booming blade followed up by a normal long sword attack using hasted action. There's no escape. I'm in that Genies grill. Even if it could leap out of the water and start flying, I'm going to be there slashing it with my sword and punching it in the face.😊 That's me nerding out. My Mystical Monk is really doing well in Tyranny of Dragons so far and racks up a lot of kills despite it being a bastard build optimized around an unoptimized roleplay concept of an Arcane Monk. Great video as always! I learn tactics from you guys like Dodge, that shit comes in clutch😅 Keep making them weep, Sarson, and keep making the baddies cry, gang. Peace, out!