With the early spoilers from Commander 2017, we found there were several legendary dragons revealed! What many do not realize is that all of them are dragons of lore past- Wasitora, Ramos, O-Kagachi have all had their part in the Magic storyline.
Here we give you a brief history of each, with the links to learn more!
Wasitora was a cat dragon of Jamuraa, on the plane of Dominaria, during the time of the Legends cycle. She was sent into the jungle at an early age by her mother, and possessed green mana healing abilities. Isolated from other Nekoru (cat dragon) culture, she grew up wild. One day, she encountered a group of them gathering one day for their mating ritual, at which she defeated all the other female nekoru, and was thereby crowed the Nekoru queen. After mating with the king Nekoru, she left Jamuraa, heading to the continent of Madara to raise her litter.
Details of these events are in the "Monsters of Magic Anthology" novel, edited by J. Robert King.
Later, she is demanding tribute from a fishing village who call on the Imperial Champion of Madara to aid them. Tetsuo Umezawa, the Imperial Champion, instead appoints her as deputy of the Imperial Champion and guardian of Sekana village port. She also aids Tetsuo in his campaign against the dragon emperor Nicol Bolas, protecting Umezawa manor against the Kentsu army with her dragon kittens.
Details of these events can be found in the Legends II novels: Assassin's Blade, Emperor's Fist, Champion's Trial, by Scott McGough.
Further summary can be found at the mtg wiki:
Ramos was a reprogrammed dragon engine of Phyrexian design originally under the control of Mishra, but upon reprogramming, sent by Urza to protect the people of Terisiare (a continent on Dominaria).
Dragon engines were some of the Phyrexian machines given to Mishra in order to conquer Terisiare (the largest continent on Dominaria), against his brother Urza. At some point in the Brother's War, Urza captured Ramos and reprogrammed it.
Ramos gathered humans and merfolk to protect during the Sylex blast in the Brother's War, and managed to planeshift through Phyrexia and ending up in Mercadia by using a planar portal. The people he brought to Mercadia ended up being the Cho-Arrim and the Merfolk of Rishada. Parts of him, the "Bones of Ramos" were five power stones and part of the legacy, which the Weatherlight crew eventually re-acquired during the events of Mercadian Masques, towards their goal of completing the legacy weapon. Ramos aided the Weatherlight by attacking and destroying Volrath's ship, the Recreant while they battled on Mercadia.
Further summary can be found at the mtg wiki: http://mtg.gamepedia.com/Ramos
O-Kagachi was the great serpent, the spirit of the barrier between the two worlds. When Konda managed to steal "That which was taken" from the spirit world, it began the Kami war, as "That which was taken" is the daughter of O-Kagachi, though she herself is not a dragon. O-Kagachi eventually manifested in the physical plane of Kamigawa, in the 20th year of the Kami war three times, finally being defeated by Michiko and "That which was taken" (manifesting herself to a woman, and giving herself the name "Kyodai"). The two women took up the mantle of guardians of the veil between worlds, and ended the Kami war.
Further summary can be found at the mtg wiki: http://mtg.gamepedia.com/O-Kagachi
So, I'm really excited to see these three classic legendary dragons in Commander 2017! Who else are we hoping for in the other 3 decks? And will there be any story about the Ur-Dragon?