Adult white dragon AC 18 HP 155... swings around again having passed from top down diagonally coming back up. 

Breath weapon recharge 5-6 1

Without its breath it tries to bite and tail strike Silenus.

Bite. 30 to hit, 14 piercing damage plus 7 cold damage.

Tail.  26 to hit, 11 bludgeoning damage.

It's in flight cutting over Silenus on the lower platform and up over Rinn an top of the keep.

It tries grabbing Rinn's body.

Claw.  22 to grab Rinn

(Is it flying out of melee range with Silenus?)

(( When it finished its tail attack on Silenus, yes, it would have left Silenus' melee attack range. ))

(( Silenus could try to opportunity attack its tail. ))

This isn't going well, Silenus thinks even through his haze of magical energy. "Why did we think this was a young dragon?" Silenus muses to Rinn.

The bite and tail connect, and only Silenus' rage lets him keep upright. He be long dead by now otherwise.

However, both the attacks cause the dragon some damage too from the wild surging magic flowing through Silenus (6  force damage when the dragon bites, and another 6  force damage to the tail.)  

As the dragon takes up into the air, Silenus instinctively slashes out with his great axe (Opportunity Attack - Attack: 12 Damage: 8  )

Silenus looks for some where the dragon can't get through (preferably with 30') but first he drops his great axe, turns and hurls first one javelin then another. Feeling like this is the end of the line anyway, he does so recklessly (Reckless Attack). He then runs towards whatever cover is available.

Attack 1 - Javelin - Attack: 24 Damage: 12  

Attack 2 - Javelin - Attack: 13 Damage: 8  

Adult white dragon AC 18 HP 104.

Silenus is on the base of Icespire Peak Hold. There is the dragon's lair (the interior of the hold) or the bridge across to the gatehouse towers and plaza.

The sudden extreme pain from the two javelin definitely attract the dragon's full attention. 

Roaring in pain and frustration it circle up tossing Rinn's body out over the revine and swoops down for another strafing attack at Silenus. 

Breath weapon recharge 5-6 4

Not getting within melee it unleashes its icy breath. DC 19 Constitution saving throw, taking 46 half if successful. 

As the extreme cold of the last moments in the Prime material plain wash over you dragging your conscious into darkness of the void, Silenus and Rinn burst through the thin ice of the pond in the manor in the faywilde. 

You only have with you the talisman you had when you last left this place. Attendants cover you in a warm toga. 

While the weather has gotten colder, the party is still only getting started. 

Jasmine is there, but she only vaguely recognizes you.

She is often at the garden's gates or the manor's door awaiting a desired guest who hasn't arrived. 

Elsa and her stepmother, Cinnaess, drop in on the party from time to time.

The seasons change on the whims of the hostess, of course, and time is rather harder to track in the faywilde.

You learn that the great beast you faced left the area.

One of its children, the one bound to Elsa, was smarter (or warmer 🤔), than its siblings. 

It with guidance from Robwin, the elder one in Robwin's clone, and the Nothic has apparently taken mastery over two of its siblings and three of those fire bellied centipede creatures. They live and grow in the icespire peak stronghold which has been refurbished over the years according to Elsa's stories. 

The mansion in Phandalin was eventually rebuilt with Robwin and Elsa serving as the masters of the estate.

Eventually, Elsa joins the party as a resident guest, like you both. 

Cinnaess continues dropping in from time to time and always has interesting stories. 

As with all things lost in the faywilde, you sometimes forget who you are or where or will be and sometimes you remember but there is always another distraction. 

(( OOC: Awesome, campaign, all the players who dipped their toes in from time to time and the ones who staggered through four years. Rinn was there from day one. And Silenus was amazing. ))