Tetrevess will let the temple  know he has the sphere and tell them he is hoping to find a good home for it, for a fair price.   He would like to add those spells to his spellbook.

he will gladly accompany Sam to Faerun, it sounds interesting.   He has no connections to this plane aside from it being where he grew up.  Assuming he has acquired some funds, he will set up in waterdeep as a sage and scholar, while pursuing his arcane interests.  

(@Wile_E_Coyote, I've been using rules from Xanathar's Guide to Everything: Downtime Revisited)

So, as a research partner, Tetrevess deserves a commission from Gravity. She will spend a few workweeks to craft an uncommon staff for Tetrevess and offer the item. What kind of staff or item would your PC like? @Tesservett

Sam would also mention to the group of a possible base location of a certain volcanic forge when back in his time has a red dragon underneath with some kolbots looking after it 

"We are but the humble servants of the Platinum Dragon.  We are happy to help you with the issue of your cursed blade.  It speaks to me even now, the foul blade.  I can cleanse you of its curse.  We will support you until you are well enough to travel again, but I sense a darkness in you, Samogri.  I feel it is at war in your heart.  You have come to us, your cousins to aid you.  You have made a choice for the better.  But at this time, I have decided that your continued presence puts our temple at risk.  The faith of Bahamut has but a few temples, and the loss of one would be felt most deeply.  I tell you this not naively, but as a warning, as the venomous creature bears bright hues contrasted with its black tones.  Such are my words to you.  If you find yourself in need of guidance, I will be an ear to you.  But I cannot offer shelter."

<He's saying you can short rest, maybe even double short rest if there's a mechanical benefit, bit its probably moot.  He won't let you long rest here.  I wasn't even planning on writing this dialogue, but then I started thinking, 'what even is this game if im not even role-playing it?'>

I've got another one in mind if you're ready to head ro Hews Place in Greyhaw city.

Quote from Wile_E_Coyote >>

"We are but the humble servants of the Platinum Dragon.  We are happy to help you with the issue of your cursed blade.  It speaks to me even now, the foul blade.  I can cleanse you of its curse.  We will support you until you are well enough to travel again, but I sense a darkness in you, Samogri.  I feel it is at war in your heart.  You have come to us, your cousins to aid you.  You have made a choice for the better.  But at this time, I have decided that your continued presence puts our temple at risk.  The faith of Bahamut has but a few temples, and the loss of one would be felt most deeply.  I tell you this not naively, but as a warning, as the venomous creature bears bright hues contrasted with its black tones.  Such are my words to you.  If you find yourself in need of guidance, I will be an ear to you.  But I cannot offer shelter."

<He's saying you can short rest, maybe even double short rest if there's a mechanical benefit, bit its probably moot.  He won't let you long rest here.  I wasn't even planning on writing this dialogue, but then I started thinking, 'what even is this game if im not even role-playing it?'>

I've got another one in mind if you're ready to head ro Hews Place in Greyhaw city.

 “It claws at us no duty no matter the cost, I wish to try and find my people a way out of this hell that we are in, for to long we have been sold as slaves to dragons or humans that must end for the better of are people” hands over ruinblade to him “I’ll be heading to greyhaw if you wish to find me, I’ll find something for me the queen won’t succeed or her children whilst I have breath, may the world serpent gaze protect you and god for most nights to come, farewell” sam will walk out of the temple and then go to find a weapon smith and find a new blade 

Gravity has been waiting for Sam outside the temple dressed in the costume of a weapon-smith with leather armor doused in metallic gleam, polaroid protective glasses and a pair of simple gloves. When Sam departs from the temple, she flashes him a broad smile followed by deliberate display of pearl-white teeth.

"Hey-ho Sir! We meet again. Are you looking for welding service? Fret not, a small tear in that gorgeous armor of yours will disappear within the twinkling of an eye"- she pulls out a pair of lodestones and grinds them together to generate sparks.

"Or you might be interested to adopt a steel companion like this one"- she indicates a small construct made of scrap materials. It vaguely resembles a lizard with blue-tinted base, a pair of rounded lovey-dovey eyes are welded into it's metallic head.

"No? Perhaps, you'll..."

(If someone's not interrupting her flow of words, she will go on, forever.)

Sam just directly says “yes I get your point come the road is long you have my flame toung don’t you” he says with interesting thoughts  “make me a decent weapon for the time being then I’ll look for a weapon smith in grey hawk”

Tetrevess smiles at Gravity.  “I would be honored to carry a wand of magic missiles crafted by yourself. I think it will come in most useful for our shared adventures to come.  I have obtained a staff in exchange for that dangerous and hard to transport Sphere”.  

tetrevess travels with the group to waterdeep and finds a suitable tower to set up his scholarly pursuits.   He will spend much of his time upgrading his arcane grimoire to a +2.

Gravity huffs when Sam interrupts her mid-sentence, hands on hip while tapping the sole of her boots on the ground impatiently. "I changed the passcode to 'inferno', it's still in mint condition"- she will unsheathe the Flame-Tongue Scimitar and return it to the initial owner. "I thought we were about to pay a quick visit to Heward. You know, I'll need a permanent employment opportunity, and he might be able to do something."

She scratches the back of her head when explaining her current condition. A close inspection will reveal that she has achieved a healthy tan from her training and her neon-orange hair has turned matte orange with brown highlights. She responds to Tetrevess, "Just gimme a few hours, eight hours' uninterrupted work will do. Your wand will be ready."

Sam looks at gravity “thanks this is only temporary” pointing at the blade “I’ll give it back when I’ve found a weapon suited for my needs” 

“Do one of you want to wield the Heart of Thunder?  It makes a potent weapon in the hands of someone who fights in combat..” tetrevess asks.

Quote from Tesservett >>

“Do one of you want to wield the Heart of Thunder?  It makes a potent weapon in the hands of someone who fights in combat..” tetrevess asks.

 

Sam’s interest is peeked “show it to me” 

“It’s this [Tooltip Not Found]

don’t know why tooltip not working-  it’s the stormheart:

This crackling sphere is implanted directly into your chest, where it subsumes and partly replaces your heart, dropping you to 0 hit points and requiring you to start making death saving throws until you stabilize, or until you receive healing (which would negate the need for death saving throws if received soon enough).  If the implant successfully takes, a portion of the sphere remains visible, crackling and shining.

The Stormheart has 6 charges and regains 1d6 charges daily at dawn.  When 1 charge is expended as a bonus action when you attack with a melee weapon or your hands, the attack deals an additional 3d8 lightning damage.

Quote from Tesservett >>

“It’s this [Tooltip Not Found]

don’t know why tooltip not working-  it’s the stormheart:

 

This crackling sphere is implanted directly into your chest, where it subsumes and partly replaces your heart, dropping you to 0 hit points and requiring you to start making death saving throws until you stabilize, or until you receive healing (which would negate the need for death saving throws if received soon enough).  If the implant successfully takes, a portion of the sphere remains visible, crackling and shining.

The Stormheart has 6 charges and regains 1d6 charges daily at dawn.  When 1 charge is expended as a bonus action when you attack with a melee weapon or your hands, the attack deals an additional 3d8 lightning damage.

 “ sadly not my style” 

“Well- perhaps we should sell or trade it for something more useful”.  Tetrevess says.  “Or Gravity you could install it into one of your creations?”  

Gravity chews on her upper lip while taking in the information provided by Tetrevess. Then she proceeds to speak, "That's a viable option, yes it is. But, I think we should weaponize the stormheart. It's going to be a lethal weapon and ensure quick decisive victory. Just think about it's effectiveness against the bear-like creature."

“Your use of it was inspired, Gravity.   You certainly can carry it, I don’t think we would have survived that battle without it.”  Tetrevess says.

Asking around Greyhawk city, you are asked to find withonly minor difficulty the small tavern in the heart if rhe thieve's quarter known as Hew's Place.  Lacking any clear signage, save a stylized symbolic representstion of a lyre painted above the door, the outwardly run down hole-in the-wall is far nicer within.  As you open the swinging door, the room is extremely dim compared to even the marginal daylight available under the cloudy afternoon sky.  As the door swings shut behind you, the lights seem to brighten immensely, though no source of light us discernible; it's just sort if ambient everywhere.  But this is no white void, it's just a well lit but windowless room, warm and comfortable, and shockingly spacious.  At least ten times rhe size if the building you entered, there stands behind the bar a burly man, humming sings with the sound if rhe flute played by a man in the corner.  The musician is a superb talent, but his song is understated, not an ostentatious tune, bit a simple melody, embellished with many layers if subtle flair.  The flautist has a comically broad mustache, no hair on the roo of his head.  He wears a cape and a frilled collar.

Beside the man playing flute, seared upon his stool, there stands against the wall a great pipe organ, stretching perhaps a hundred feet to the rafters kf the high ceiling.  It us made of a lustrous black metal.  

Seeing you enter, the man ends his tune with a haunting, somber note that resolves from deliberate dissonance to a cathartic tone, before finishing with a light-hwarted rapid flourish.  He stands and greets you, "At last, you've arrived!  I've been expecting you for some time." The man says with an u familiar grsture, which might be some sort of greeting, as he holds aloft his index d8nger and pinky, with the two digits between curled toward his palm, held in place by his thumb, not unlike the horns of a bull, the hand thus held, raised skyward. 🤘 

At this point, it is clear the man wears his pale gray hair in a short pony tail.

“Greetings… I am Tetrevess.  Impressive place.. I am fascinated by extra dimensional magic..”. The wizard looks around.  His formerly scraggly beard has filled in and is now an impressive brown beard.  He’s clad in scholar’s robes and walks with a staff.  “And who might I have the pleasure of meeting?” Tetrevess smiles..