The Trinary Re-Alignment was a completely natural event that marked the rebirth of the "Age of Magic" on the planet Prysmos.
Eons past, Prysmos was a world ruled by magic before advances in technology made the arcana vast redundant. As a result, the last known sorcerer, Merklynn was little more than a joke. Seeking to restore his world to what he perceived to be its natural state, Merklynn crafted a spell powerful enough to align the three stars that Prysmos orbited, the resulting burst of radiation disabling all technology on the planet at least three hundred years prior to 2018. Though Merklynn had intended for the Re-Alignment to be permanent, he had been hasty in crafting his spell and the stars drifted out of alignment, causing the Trinary De-Alignment. The gravitational forces unleashed by the stars tore Prysmos to shreds with only a handful of survivors managing to flee into space.
Shortly afterwards however, Bumblebee found evidence suggesting that Prysmos had in fact been destroyed by the energies of the Talisman's initial activation, its energies cascading across time/space and stealing away the natural magic of Prysmos, destroying the planet as a side-effect.