1) I think you greatly misunderstand the sword logic. The sword logic is gaining power from your kills. [b]The more you kill, the stronger you become[/b]. It is you escaping the laws of reality through causing death. One application of the power you gain is being able to cut through space itself, and to carve out throne worlds as universes where you respawn to upon death, thus ensuring your survival. The main point though is it's all about gaining power and strength from killing. Examples: [quote]Quria deduced the sword logic. I have to kill everything, Quria resolved. Then I will be powerful. (Verse 4:9 — open your eye : go into it)[/quote] *sword logic = strength/power from killing. [quote]You are no longer bound by causal closure. Your will defeats law. Kill a hundred of your children with a long blade, Auryx, and observe the change in the blade. Observe how the universe shrinks from you in terror. (Verse 2:6 — The [b]Sword Logic[/b])[/quote] [quote]SAVATHÛN said, Auryx my brother and king, [b]I have studied the wounds cut by the Worm our God. Also I have studied the manner of your death and return. These two things are the same, for they are predicated on death and the passage through cut spaces. Let us practice the sword logic until we are sharp. We may then cut our own wounds and step through[/b]. (Verse 3:1 — an incision)[/quote] *sword logic (strength/power from killing) allows you to cut through space, and allows you to return from death. [quote]Said Akka, “You have not the [b]strength[/b].” [b]But this was a lie. Auryx had killed Savathûn his sibling and Xivu Arath his sibling, and he had the sword logic of killing them[/b]. (Verse 3:8 — King of Shapes)[/quote] *sword logic = strength/power from killing. [quote]OBLIGATIONS. Once, I permitted Oryx to kill me so that he could gain the sword logic and overcome Akka our God. (Verse 4:5 — This Love Is War)[/quote] *sword logic = strength/power from killing. 2) The Killing logic is simply proving that you were stronger than what you killed; the fact that you killed your enemy proves that you were stronger. Killing logic is essentially like having a driver's license; having one in your hand doesn't make you a better driver, but it is proof that you already know how to drive. [quote]“Then kill me,” says Xivu Arath, “and use that killing logic, the power [b]you prove[/b] by killing something as mighty as me.” [...] “And strangle me,” says Savathûn, holding a blade behind her back. “Use that killing logic, the cunning you prove by killing something as smart as me.” (Verse 3:6 — star by star by star)[/quote] *Oryx used the killing logic of killing his sisters to have a meeting with Akka. By killing his sisters, he proved he was worthy of an audience. The kills did make him more powerful, but that power gain is just sword logic. The killing logic part is just about proof of your superiority. 3) The deathsinger Ir Yut did not come back because of some "purpose," she came back because she hid her death in an oversoul, as explained by the sisters Ir Halak and Ir Anuk. [quote]“We propose a method by which Ascendant souls can be detached and integrated into a tautological and autonomous thanatosphere, which we tentatively term an oversoul. Oversouls can be stored in a throne world as[b] a mechanism of enhanced death resilience[/b]. As a side effect, new refinements to our Deathsong may be achieved, moving us closer to a generally effective paracausal death impulse.” Oryx brandished his sword. “Speak the Royal Tongue, or I’ll pin you up for Eir to eat.” “[b]If we can separate our deaths from ourselves, and hide them, we will be hard to kill[/b].” (Verse 4:8 — The partition of death)[/quote] 4) Oryx, Xivu Arath, and Savathun defined themselves by their actions and their nature. Oryx was curiosity, Xivu Arath is War, and Savathun is cunning. By performing actions relating to their natures, you can summon them back from the dead (like waging war to summon Xivu Arath back to life), but this is ONLY if they did NOT die in the throne worlds. [b]Throne worlds are how Hive Gods survive death, and they are a product of the power they amass from killing (AKA sword logic).[/b] If you die, you are reborn in your throne world. It's all just a matter of getting enough kills, and not being killed inside your own throne world. Nothing about "purpose" is needed. [quote]Your body is gone, but you have endured. [b]Safe in the cyst universe created by your own might[/b] — your throne world. From this day forward, Auryx, you and your sisters will each survive death — so long as you aren’t killed in your own throne. (Verse 2:7 — The Weakness Verse)[/quote] *Clearly explains how Hive gods survive death. They are reborn in throne worlds. Throne worlds are born of the might (sword logic) of a Hive god.