Do you guys think that since Skolas knew Oryx was coming (See card: Skolas captured where he mutters of a "light snuffer") he used the Vault not to travel through time or to make his wolves immortal but instead to hide from Oryx? Perhaps he thought House Wolves could only survive if he hid from Oryx and waited for the whole Taken War to blow over.
Thoughts?
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He so knew Oryx was coming
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It's possible but I doubt Bungie was thinking that. Still possible