Laura Cynthia Nielsen, known as the mystical Silver Sorceress, along with Blue Jay and Wandjina, created a magical portal and came to our Dimension's Earth in order to disarm it of it’s nuclear weaponry before our planets leaders would possibly one day cause a Nuclear holocaust. Their home planet of Angor was ravaged and destroyed by a nuclear explosions after a terrorist group of meta-humans destroyed all life on Angor. Being the last being alive on the planet they decided to depart, wanting to spare Earth the same fate.
This plan leads them to the country of Bilaya, being mislead by the Minister of Defense, who was trying to use them to collect nuclear arms for his own use. After being led to believe that Russia's supply of nuclear arms would be better relocated to Bialya , they departed to investigate further. The Silver Sorceress along with her teammates were all suspicious of the Minister but also realized that this was one of Earth's biggest accumulation of nuclear weapons. After arriving to Russia they faced the combined might of the Rocket Red Brigade and the Justice League. During the battle, Wandjina sacrificed his life in order to save the people of Bilaya from a nuclear meltdown.
When the JLA departed both the Silver Sorceress and Blue Jay were apprehended by Russian authorities. However, they only remained incarcerated until they felt that it was interfering with their plans, they had made a pact with Wandjina and even if only two remained they would continue. Silver Sorceress cast a spell and teleported away back to her home world of Angor while Blue Jay escaped into the Russian wilderness. In deep contemplation, and still morning her former comrades, it would be some time before she would decide to return to Earth.
Upon her return to Earth, Silver Sorceress joined the European Branch of the Justice League International alongside her longtime friend and also the last survivor of Angor , Blue Jay. Shortly after joining the JLE, Laura, along with several other members of the JLI, are overwhelmed and possessed by the mentally powered alien Starro. She was forced to battle her friends and new comrades until Ice defeated Starro by encasing it in ice and freed them of their possession.
Shortly thereafter, the JLE rescued one the few survivors of Silver Sorceress’ home world - Mitch Wacky. He was one of ,if not the most, revered and iconic members of Angorian society. Mitch was being held prisoner by robotic versions of the Angorian meta-human villain responsible for the destruction of her home world, the Extremists. The Sorceress soon learned Mitch was dying of the flu, an ailment that is easily remedied back on Earth. This terrible news came as another brutal reminder of how different her people were to her teammates, of how alone she still felt on Earth.
Laura remained an active member of the Justice League Europe for quite some time until her death at the hands of Dreamslayer, who was one of the very few people left from her planet. She traveled to the mobile island Kooey Kooey Kooey to rescue Mitch from the latest team of robotic versions of the Extremists. It was revealed Dreamslayer was in fact living and breathing and was forcing Mitch to create the others again. Once Mitch had completed their creation, he was brutally murdered.
Dreamslayer had also mentally possessed the natives on the island and had one of them shoot Laura through the stomach. As she lay dying, she used the last of her energy to destroy Dreamslayer. When the League found her, they buried her on the island. Despite the fact they all lost a friend, none were as affected by her death as much as Blue Jay, for now he was literally the last of his people.
Booster Gold: Blue and Gold
In an alternate reality, in which Booster Gold saved Ted Kord from Max Lord, Silver Soceress has a bust in the Justice League Europe museum.
The Silver Sorceress was colorblind.
This version of the Silver Sorceress had the name Anna and was Dr. Diehard's daughter. She was imprisoned alongside other super humans deemed "too dangerous" too have freedom. When a guard tried to force himself on her, she resisted and was shot in the head.
Silver Sorceress and her comrades appear to be pastiches of some members of the Avengers. Silver Sorceress matches Marvel's mutant/magician the Scarlet Witch (magic powers, father a supervillian, odd headwear). Wandjina is a pastiche of Thor, Bluejay is a pastiche of Yellowjacket/Wasp.