Massive shoutout to Over Heaven on the community discord for this awesome suggestion!
If you have any monsters you'd like to see us cover on this channel, please leave a suggestion here or on the suggestions chat in Discord!

This video was an absolute monster, I think it's the longest one I've ever done. Sorry it took so long to come out but by golly gosh was it a lot of work. Next week maybe we'll check out a monster that doesn't have age categories. See ya then!

Without his beard he is more like Dungeon Bro.

Unlikely as it might be, suppose a Moon and Sun Dragon decided to mate and they produced an Eclipse Dragon. Essentially an Eclipse Dragon would have abilities of both, but it is at it’s power during an eclipse.

In my campaign we had a Sun dragon who's approaching the end of its life. It told adventurers it's "very stressed about it" and made them massage its shoulders and rub its toes until it dies to prevent "going supernova." Adventuring party after adventuring party shoved the responsibility onto each other over a few decades until our party, where they got frustrated after like 5 minutes and fearlessly asked what's really stressing the dragon out.

The dragon feared his death will coincide with the approaching solar eclipse, which will end the cycle of Sun dragon reincarnation and cause the Moon dragon to rampage eternally. To prevent this, the players needed to find the Moon dragon and convince it to help. It didn't want to lose its mind so it happily obliged by murdering the Sun dragon early to continue the cycle.

I like how the Sun Dragon has the life cycle of an actual star. Its a fun tidbit.

Coming back three years later after the official Spelljammer release, I gotta say, these dragons are better, in my opinion, than half of what came out of the official book. You are a gentleman and a scholar, and deserve the title of lore master. I appreciate all the work you do and am so happy to be a part of this community.

Me: Getting absolutely destroyed by a white moon dragon
Me: So it’s that time of the month again?
Moon dragon: destroying intensifies

I'm really glad you added the blood moon aspect but was also hoping for at least the addition of a 'blue moon' aspect. Another idea that crossed my mind was about the 'harvest moon' or 'super moon'.
Great episode! Always great to hear what you have to share.

I don't know if it was accidental or genius, but the bit about 23:20 where  you mention the moon dragon's alignment shift to chaotic evil and the music changes to the fast, chaotic portion is just SO GOOD. I rewound that like 4 times.

so. for harvest moons i think it becoming pure neutral, it becomes orange and becomes faster, for blue moons it becomes smoky, gains fake copies to trick the party and gets a chaotic neutral aliment, and a super moon... it becomes EVEN BIGGER and it gains a neutral evil alignment.

Another way to do a moon dragon during a blood moon would be to make them temporary vampires for one night. Your average vamp will generally only kill a single person a night, since that's about all they'd need to drink on account of being a medium creature; but how much blood might a gargantuan creature be able to drink in a night? Plus, the fact that it only happens for a single night means the sunlight weakness means almost nothing, and their ability to fly means the running water weakness also means nothing.
So its bite attack now drains max HP and heals the dragon, it regenerates HP every turn, it can charm creatures, and you can alter the 'children of the night' ability to summon lycanthropes instead.
On top of all that, it's likely going to spread a hell of a lot of vampirism, meaning there'd be knock-on vampire attacks for the next few years until they're all killed.

Massively dangerous, even a single event like this would be historic.

I ran a moon dragon in my game, the exact words immediately following the end of the session were "Where the hell did you find that thing?!"

I can't help but think how would Moon/Sun Dragons be affected by a world having more than one moon/sun.
Edit: When you mentioned an additional phase for the moon dragon, I thought you were going to say 'Blue Moon', and I was thinking a Blue Phase Moon Dragon being Good while in that state

The blood moon dragon gave me an idea for an immensely powerful moon dragon scheming to magically bring about an endless blood moon with lycanthropic and vampiric (added because it fits the blood theme) armies serving its will.

My world doesn't have moon dragons, it has The Moon Dragon. One unbelievably powerful eldritch draconic being that literally hatched from the moon. The moon is forever cracked like an egg in the sky and made of silver. Also the Moon Dragon has no stat block, because if the players tried to fight it, they would die instantly, as it is more powerful than even the setting's gods and elder elementals.

The way the dragons change over time is super awesome, particularly with the moon dragon.

I just had an amazing idea for a plot hook involving a sun dragon. you mentioned they get to be a small size when they reach the end of their life... imagine if you will your party comes across a group of bandits that have what appears to be a white dragon wyrmling in a cage. this thing looks scared and your party will likely want to help free it. if they do it will ask to join them on their journey and become a companion... but will never use the breath weapon... it can jump on people as a distraction or to knock them prone... it can give a couple claw attacks or a bite but you'll roll with the wyrmling stat block because this dragon is nearing the end of its life and wants one last grand adventure and so it plays the one part it never could even as a young dragon... a fun tagalong companion. and for a bonus emotional gut punch you can have the natural end of its life come about at the end of the campaign right after the final boss and potentially the only fight where it uses that breath weapon

My idea for this would be that the Moon dragon actually becomes a Lawful Good once it becomes a full moon, and when a sun dragon is near a moon dragon it changes to its full moon faze. (Or a different version depending on how far the sun dragon is) Therefor, New Moon dragons try and stay away from sun dragons, while those in their full moon try and stay closer to them. This plays in the Mythos of the sun and moon being in love while the moon dragon is a full moon, and you can expand on it based on that.

Sun dragon after using it's breaþ weapon: oh, there gonna have to glue you back together, IN HELL!

I like how the moon dragon changes alignment every seven days, but i would change it so that each dragon would be a line in the alignment chart and slide between them per 7 days