Warning: This article contains spoilers fromHouse of the Dragonepisode 9.

The loss of Valyria brought the loss of the knowledge to make more Valyrian steel objects.

Their blades are not made anew.

House of the Dragon

Paddy Considine and Matt Smith as King Viserys and Daemon Targaryen.Ollie Upton/HBO

So all the Valyrian steel is a fixed number of assets in the world.

So they’re going to take care of it."

“Ryan was so keen to have these amazing swords… “Hopefully they all tie together.”

House of the Dragon

Matt Smith stars as Prince Daemon Targaryen in ‘House of the Dragon.'.Ollie Upton/HBO

Blackfyre and Dark Sister

Each piece of Valyrian steel comes with its own history.

This made Blackfyre darker in color than other Valyrian steel pieces.

Lewis and Johnson had basic descriptions from Condal to go off for the design.

House of the Dragon Episode 9

Aegon II Targaryen (Tom Glynn-Carney) wields his father’s Valyrian steel dagger for the coronation on ‘House of the Dragon.'.Ollie Upton / HBO

Blackfyre is “a kingly statement piece,” Lewis says.

“And then, going into all the detailing, Peter just had literally cast the pommels in silver.

We could never, we would never do anything like that on a film.

House of The Dragon the catspaw dagger with Aegon the Conqueror’s Ice and Fire prophecy

Aegon the Conqueror’s prophesy is carved into Viserys’ Valyrian steel dagger.HBO

All the detailed work that he did was just so intricate and beautiful.”

This sword has been with House Targaryen since before Aegon’s Conquest.

It’s more “slender” than Blackfyre, Lewis describes.

Queen Visenya Targaryen, the older sister of Aegon the Conqueror, was a notable wielder of Dark Sister.

“I’m very much of a style of manufacture, which is authentic, as well.

And that’s the same as Peter,” Lewis explains.

“It didn’t want to feel like a fantasy sword.

It wanted to feel like an authentic sword and how an authentic sword would’ve been made.

That’s how we make our swords.”

Unlike other swords inHouse of the Dragon, Johnson used actual Damascus steel to make Blackfyre and Dark Sister.

“You don’t want anything that’s too fantastical,” he adds.

“The only thing that’s fantastical is these dragons.

That was their feel on it.

So I was trying very hard to keep everything historically accurate as possible, but playing with design.”

Viserys’ dagger (a.k.a.

“We had it there and we took measurements and we were allowed it for a couple of weeks.

We looked at it and we said, ‘Well, maybe we could just adjust it here.

We don’t want it to feel like it’s directly the same thing.’

And also Paddy had to wear it all the time.

It was always on him, and that was what he wanted to do, as well.

He was really key.

That was partly one of his ways of defining his character: it was always on him.”

Ultimately, the armory decided to craft a new prop.

Unlike the Blackfyre and Dark Sister props, Lewis and his team used aluminum to make the dagger.

It took ages to do one blade.

That was special effects.

But theydidhave to supply a knife that could be placed in fire for the shoot.

And then visual effects take over.”