NightWing-IceWing War
The dragon world of Pyrrhia was locked in a major war between the NightWings and IceWings, started around thousands of years before the events of The Dragonet Prophecy. It began when Foeslayer fell in love with Prince Arctic, and they fled to the Night Kingdom. The IceWings accused the NightWings of "stealing" Prince Arctic and his animus blood.
Most of the battles in the NightWing-IceWing War occurred in the Kingdom of Sand, since it lay between the two kingdoms. This war led to longstanding enmity between the NightWings and the IceWings, as seen when Morrowseer had the IceWing prisoners at Queen Scarlet's Palace all murdered.
Background
Around two thousand years before the main arc, Queen Vigilance sent Discretion, Starclaws, Prudence on a diplomatic visit to the Ice Kingdom, attempting to negotiate an alliance between the two tribes. Prudence brought her daughter Foeslayer along, predicting that she might fall in love with Prince Arctic of the IceWings, bringing animus genes to the NightWings. That was exactly what happen. When they attempted to flee the kingdom, they were stopped by six guards. Arctic accidentally killed four of the guards, and the other two, Snowflake and Princess Snowfox confronted them. To escape, Foeslayer breathed fire at Snowflake, injuring her wing. Arctic and the NightWings flew back to the Night Kingdom.
Darkstalker
In an unknown time after their return, Darkstalker and Whiteout were born to Arctic and Foeslayer. Darkstalker was an animus, and his magic was sought in this war, when he invented various magical weapons to counter the IceWings' attacks.
Negotiation
There were barely any proper negotiations trying to end the war. In Darkstalker (Legends), it was mentioned that brief ceasefires occurred when Queen Vigilance and Queen Diamond would send each other increasingly angry letters accusing each other of starting the war, until one decided to attack again.
Resolution
The NightWings fled into hiding after Darkstalker's imprisonment without any true resolution to the war.
