AncientPower
The Chosen One
Dark Side Nexus:
1.Nathema, during the ritual Vitiate created the strongest dark side nexus ever before absorbing it.
2.Malachor V, before the MSG it had cityscapes and necropoli across the planet's surface filled with Sith treasure and knowledge, enough collected energy for Darth Revan to raise and corrupt his Jedi with. Afterwards it was strong enough to transform stormbeasts and is described as a geyser of Dark Side energy at it's core.
3.Yavin IV, described as far more potent than even Oricon, need i say more.
4.Ambria, a place that Jedi archeologists have stated is the strongest accumulation of Dark Side energy on record, triggered by a global ritual gone wrong.
5.Oricon, stronger than Korriban, Dromund Kaas and Ziost in it's potency, a complete hell of a world morphed by Ancient Sith, Dread Masters and even apparently the seeds.