Aeyan’arric (linked Cornerstone: Skyfire)
Powers: Ice, storms, cold
While Aeyan’arric is hardly “good” in any sense of the word, of all the dragons she is the least actively malicious, which is to say she’s exactly as dangerous as one would expect if a particularly sadistic house cat ended up in the body of a giant ice dragon. So dangerous, but animalistic in her rages and tantrums. If nothing else, the storms that accompany her passage are always devastating.
Baelosh (linked Cornerstone: Wildheart)
Powers: Plant life
Baelosh is one of the better known of the dragons thanks to his well-documented rivalry with Emperor Simillion. He is clever and cruel and takes a particular delight in collecting tsali stones of all types. While in theory his presence might be good for a region—his passage often results in lush, overgrown vegetation—the actively harmful nature of that foliage typically qualifies as “too much of a good thing.”
Drehemia (linked Cornerstone: The Name of All Things)
Powers: Shadows, darkness, ignorance, secrets
The Queen of Secrets is seldom seen precisely because she is seldom perceived. Drehemia is perfectly capable of flying over a city without anyone realizing it, or attacking ships without anyone (even survivors) being able to describe their attacker afterward. She is exceedingly dangerous.
Gorokai (linked Cornerstone: Chainbreaker)
Powers: Shape-change, chaos, reality alteration
Like Drehemia, Gorokai is one of the most active dragons, but also one of the most subtle. He has spent several centuries living in Rainbow Lake, for example, shape-changed into the form of a particularly large carp (apparently because it amused him to mess with the periodic fisherman who might catch him). However, his shape-changing ability doesn’t fully express the terrifying depth of his powers, since he seems to be able to force objects and people around him to change shape as well—destructively.
Morios (linked Cornerstone: Warmonger)
Powers: Metal, swords
Morios is a very straightforward dragon compared to the others—he’s made of metal, exceedingly sharp, and devastatingly strong. It’s his size (easily the largest of any of the dragons) and near invulnerability that makes him so difficult to deal with.
Rol’amar (linked Cornerstone: The Stone of Shackles)
Powers: Soulbinding
While it would be easy to assume that Rol’amar’s powers deal with death or undeath, they seem to more specifically deal with manipulating souls and forcing souls to stay tied to their physical forms, even after death. So in much the same way that someone wearing the Stone of Shackles cannot die under certain circumstances (namely when there’s no clear assailant), Rol’amar doesn’t seem to be able to die no matter how much damage his body has taken.
Sharanakal (linked Cornerstone: Worldhearth)
Powers: Fire, volcano
He’s the living embodiment of a volcano.
Xaloma (linked Cornerstone: Grimward)
Powers: Death
Very little is known about Xaloma simply because she so rarely leaves the Second World (better known as the Afterlife), which means that most of the people she encounters are in no position to tell anyone about the experience. The scope of her powers are unclear.
and
Relos Var (linked Cornerstone: Cynosure)
Powers:??
Relos Var is a dragon, although, like Gorokai, he seldom runs around looking like one. That said, he is currently the only dragon who has been “cured” by being reunited with his Cornerstone, Cynosure (which thus, technically speaking, no longer exists). According to Grizzst, Cynosure allowed its owner to be all but immune to the powers of the other Cornerstones, and Relos Var has indicated that he himself possesses some ability to control the other dragons. However, we don’t know if Relos Var has Cynosure’s powers himself.