Constantly Constellated

When creatures just like the Ursa Minor and Ursa Major start to invade outer lands including Equestria, the Lodgers and native heroes must go to the fabled polar land of Constellatia, which is the home of creatures like the Ursa Minor and Ursa Major, including Apus, Volans, Leo, Taurus, Lepus, Canis Major and Canis Minor, Lupus, Chamaeleon, Cancer, Scorpius, Cetus, Vulpecula, and so on. They are rescued by a young Ursa named Dips, about Spike's size, who brings them safely there and after meeting his siblings: Beid, Caph, Keid, Kraz, Nahn, Phact, Wazn, Dubhe, Fuyue, and Regor, they meet the dying leader of the Constellation Pony Tribes Equuleus, Pegasus, and Monoceros, dubbed starries, King Regulus, who claims that the land is being sapped of magic and it's guardian, the Hippos Athanatos, has disappeared without a trace, as well as his captain of the knighthood Sir Altair and his partners Squire Segin and Squire Torcular, and his mage Castor the Caster. Thus with the fauna of the land wreaking havoc on the world, the heroes must find the Sceptrum Scepter, the Starries' ultimate weapon, in the temple of it's creator, Constellate Sceptrum, in order to reset magic in the land. But they find it gone and discover it's under the possession of Bellatrix, Vindemiatrix, and Praecantrix, three evil but comical starry witches that, after their magic was dubbed too dangerous for the starry race, were exiled for treason and swore revenge for being turned away, doing so by abusing the Scepter, using it to drain magic from the land, control the monsters from the land, and slowly killing Regulus. They must be stopped once and for all.