You know they came about after he was defeated right? They very well could be manifestations of his memories of how he remembers his siblings. Difficult to tie them out though. No clue what the story significance would be.
With Ugin being the omitted one since he's the one dreaming/remembering. Something like that.
He created them long before he was defeated by Bolas, although they didn't become true Elder Dragons until his hibernation. But I do think the Tarkir Elders were formed in the image of the Dominaria Elders, whether it was intentional on Ugin's part or just a reflection of his subconscious thoughts. Either way, I get a sense that they're replicas, albeit very flawed ones, imperfect almost to the point of caricature.
Dromoka is similar to Arcades, but without the understanding that comes with Blue. Her Green focus on the natural order and her White focus on purity are exaggerated to the point of being all-consuming obsessions, leading to her intolerant, xenophobic, and expansionist behavior.
Ojutai is similar to Chromium, but without the detachment that comes with Black. Much like Azor, he feels certain that his way is the only right way, and has a pathological need to make sure that everyone else adopts his way of thinking. Chromium is known as the Mutable, but Ojutai is rigidly unchanging, to the point where it's practically his defining quality.
Silumgar is similar to Nicol, but without the hedonism or the willingness to take risks that come with Red. Bolas likes to indulge himself when he's in a position of power and revel in his victories, and he understands that sometimes you need to take risks and expend resources to gain more power in the long run. Bolas also seems to care about freedom (at least in the sense that he values his own freedom to do whatever he wants, even at the expense of other people's freedom) and he's displayed a pathological aversion to being trapped or limited in any way. Silumgar, on the other hand, is completely risk-averse and utterly incapable of enjoying himself. He just sits in his lair all day, paranoid and miserable, greedily hoarding everything he has without actually using any of it to do anything. He's almost a literal prisoner of his own greed and cowardice.
Atarka is very similar to Palladia, to the point of virtually being the same character. Granted, Palladia's attitude seems more Gruul than Naya, since I don't really see much White in her. But Atarka's Green and Red traits are taken to a ridiculous extreme, where she's so driven by instinct and impulse that she's literally incapable of doing anything but constantly eating, to the point where she's a threat to her own long-term survival due to the mass extinctions her feeding frenzies cause.
I don't see much similarity between Kolaghan and Vaevictus, but maybe Ugin didn't care about Vaevictus enough to replicate him, since he was a cousin and not a sibling? Or maybe he just didn't know Vaevictus well enough to even create a twisted funhouse mirror version of him.
The one note Ugin makes about Vaevictus is that he and his siblings, "furiously guarded a territory they claimed for their own hunting grounds even though it had plenty of space and game enough for many hunters to cull."
Kolaghan drives her clan about the hills and steppes of Tarkhir. They travel from place to place, quickly taking what they can/want before moving on to the next target. As such, Kolaghan also operates within a particularly large hunting area, though one with far less sustenance.
The difference between the two color-wise seems to be reflected in their choice of territories. Vaevictus and his siblings settled in or took an area with more than enough game to sustain themselves (more green), viciously defended it, and left surrounding areas alone. On the other hand, Kolaghan took an area with scarce resources (less green), viciously defended it, and necessarily raided surrounding areas for resources.
Ugin also calls Vaevictus ugly. Perhaps Kolaghan is ugly as well.
Was ever explicitly stated that Arcades Sabboth was actually one of the five Elder dragons that survived the war? I know there are statements in Bolas' bio that state Bolas was one of the five but does it ever confirm Sabbath as a survivor?
The four confirmed by having stories in the comics were Bolas, Chromium, Palladia, and Vaevictus, but I am not sure Sabboth is ever mentioned by name. The other two who may or may not be survivors of the war are:
Piru, who may have been a spawn could have become an elder much like the dragons of Takir before being killed by the Blackblade
Ugin, who may be "dead" in the sense that he is a spirit thus not a true survivor of the war.
I am sure we will get clarification soon these are just thoughts I am having.
One of Chromium's brothers (unnamed) survived the war but was killed in a conflict between Kristina and Leshrac. Most likely was Arcades Sabboth.
I got excited but then I realized what made him who he was isn't going to be in this iteration of him. No life experiences of sacrifice and struggle, just tales of domination.
the prison where I suffered needlessly on Ravnica, where my people were subjugated, was ultimately of your making... A leader cannot abandon their responsibilities.
All my whats. Yes, her suffering was made because something Azor did 10000+ years ago, not because of trashy people doing trashy things. Also a leader can retire and find a suitable replacement. Seeing how the Azorius had plenty of guild leaders throughout the Guildpact's 10000 year term, I'm sure the guild had someone in charge even if it wasn't the OG guild leader.
Ugin also calls Vaevictus ugly. Perhaps Kolaghan is ugly as well.
One of Chromium's brothers (unnamed) survived the war but was killed in a conflict between Kristina and Leshrac. Most likely was Arcades Sabboth.
Ah that makes more sense.
I got excited but then I realized what made him who he was isn't going to be in this iteration of him. No life experiences of sacrifice and struggle, just tales of domination.
Black bant, bird bant, knight bant, white bant. Sigils everywhere.
All my whats. Yes, her suffering was made because something Azor did 10000+ years ago, not because of trashy people doing trashy things. Also a leader can retire and find a suitable replacement. Seeing how the Azorius had plenty of guild leaders throughout the Guildpact's 10000 year term, I'm sure the guild had someone in charge even if it wasn't the OG guild leader.