For me, I've always believed that the energy of the sword logic is an intangible one. But my previous thoughts on this were brief and are challenged by KAGEHOSHI's musings. We know that while inside a Hive Throneworld, everyone is subject to the "laws" of the owner of the swordspace. I find it incredibly hard to believe, given Oryx's fervent beliefs, that he [i]wouldn't[/i] make the sword logic a "rule" of his world. Using this assumption, anyone who enters Oryx's throneworld would be subject to the powers of the sword logic. Therefore, the Vex would not need to use soulfire, as the sword logic has inherently intangible power in the sword space.

You're making some assumptions here. [quote]The end result of Oryxs tribute are the taken blights the ogres leave behind in the KF Oryx encounter[/quote] The 'blights' are not actually blights. Those were the remenants of cosumed Light, pure light, that was tainted once it was taken by the Hive and the Darkness. The guardians 'freed' this Light to damage Oryx, the only thing that could damage such a powerful creature, pure light. If this 'Light' was passed on to the Worm Gods, surely, it would not have been presesnt in the first place. [quote]It's the same reason the guardians grew stronger after each kill in the Dreadnaught raid: warpriest, golgoroth, the daughters, all to become sharp enough to kill oryx[/quote] Actually, that's not really true, since the whole campaign and raid are about making Oryx weaker and weaker as we progress, not us stronger. We kill his Son, then his underlings, then his court, then his shades, all to weaken Oryx in the terms of the tithe system. In fact, it is surmise to say that Oryx 'had' to enter are system becuase, with the Death of Crota, Oryx was going to be consumed without his Son's tithes. Then, in the raid, we are killing his more resourceful sources of tithes. The Warpriest that had laid countless genocide, the beast Golgoroth that could consume the Light (that we see later on), and the Sisters that could weave and unweave death for continued tithes to Oryx. All of it was to make Oryx weaker. And in the end, did we really kill him with 'our' strength. No, we had to use the Light to kill Oryx. We could stagger him, but we could not hurt him. That is why the Light, revealed in the bodies of the Ogres, was so important. It was specifically because we were not strong enough that everything else was so important. By making Oryx weaker in our reality, he was then weak to the Light in his own domain, and that Light was his downfall. -- And, I mean, if you need any more evidence that we 'didn't really become stronger' then look at how we killed Crota and we [u]still[/u] weren't regarded as ascendant Hive is either strength or sense of death. [quote] the end result of the 'tribute' system created by the vex in the black garden was a heart of darkness that looks like a taken blight but extremely unstable and untamed[/quote] The Vex did literally nothing to 'spawn' the Heart of Darkness. The Heart of Darkness was there before the Vex and the Vex worshipped it. There was no tithe system. The Heart granted power in return for worship. There was never any hint of 'tithes' being offered, or any hints of the Heart being created by the Vex. The Vex can't even understand the Heart, much like the Light, and only understood what they received from certain actions. Worship and tithing aren't the same thing. Also, the Vex would not have used Sword Logic either. It seems to be exclusively to Hive Nether Realms. To tie in the Vex finding the Heart of Darkness and attributing that to Sword Logic is a leap of faith, that I think is sorely misguided. [quote] this is no coincidence and ties visual evidence into the pure and impure theory on the energy made from sword logic in my opinion[/quote] See, I think you go along with OP in thinking that Soulfire is 'the source' of Hive Magic and the Sword Logic. That is why you can see a way that there 'pure and impure' energy depending on 'who' uses the Sword Logic. However, especially using evidence from the Vex, I don't believe this is true. I believe that soulfire is a result of Hive magic and the Sword Logic, however, [u]it is not[/u] a power source of either Hive magic or Sword Logic. The power gained from a Vex using Sword Logic and Hive using Sword Logic are exactly the same. However, the Hive must make Soulfire using their magic to appease the worm Gods. If anything, it's an unnecessary depletion of power. Whereas the Vex neednt waste power on making Soulfire as it does them no good (not that they could anyway). No, the energy is the same. There is no 'pure and impure' energy. I think there is just 'energy' and that the Hive use that energy to either gain power or make soulfire. Either or. Or both, if enough is around. The Vex, with no need for Soulfire, need only to gain power. Besides, it would be really silly for the Hive to constantly make soulfire in the midst of battle. Soulfire seems like a very 'after the fact' product. You've killed and killed and killed, and now... now you make soulfire. It's not an instantanous moment.