This map gallery by [MENTION=6802808]MichaelArkAngel[/MENTION] has several digital maps for Storm King's Thunder:
https://www.deviantart.com/michaelarkangel/gallery/
https://www.deviantart.com/michaelarkangel/gallery/
Fuimadane is a Neo Medieval, Folk, Viking, Oriental Music inspired project from the Danish guy Jon Krasheninnikoff Skarin, a man with some years of experience in electronic music - focusing on Neo Medieval, Folk, Viking, Oriental inspired music and atmosphere with a certain nordic feel.
Iymrith creates new servitor gargoyles every dozen days or so, but she is becoming increasingly obsessed with her own survival and has interrupted her usual augmentation of her gargoyle army to experiment with the creation of multiple bodies for herself. At present she can "jump" her essence from her real body to a mechanical body and to at least two statues, but she hasn't yet crafted a second living body.
The statues Iymrith has created are as large as she is, and all six of them look like stiffly-posed blue dragons made of single smooth-finished blocks of stone. (She's actually fused rock together with flowstone spells to make them.) When she teleports them about or links with them either to cast spells through them (just as a human mage can make certain spells emanate from a project image spell) or to move her sentient self-essence into them, the statues' pupilless eyes come alive with tiny flames.
Perhaps she lost the ability to do this during the Spellplague. I use that as a justification whenever I come across a creature or NPC that had more abilities in previous editions than its 5e version has.... but here's the part I can't believe they left out: Iymrith makes statues of herself, and can cast spells from them.
Not by default, but Iymrith has some innate spells added to her statblock. Klauth and Claugiyliamatar are both spellcasting dragons as well.Now, I don't believe dragons include spells in their stat blocks in 5e, but MY Iymrith is going to have some
I am doing something similar: transitioning from SKT to Rise of Tiamat, blended with elements of the Scales of War AP from 4e.
Regarding Iymrith's lair, my concern was that, as written, the PCs are not only giant-sized, but accompanied by 4 storm giants (who are immune to lightning). If Iymrith stands her ground, I really can't see how she lasts more than a round or two. (I am going from memory here--is there something that prevents the storm giants from going underground? Can't remember.) So, the burrowing becomes important to her survival, but there is another way to increase the difficulty and draw things out....