He never goes straight for the kill. That's his downfall. I don't care what he can do I know what he will do because he always does it for enemies he's facing on the first go. He kills to much time trying to talk to the boss badguy before the fight officially starts in his eyes. Plus he probably won't know what the oracles are, or the relic, or any other technicality. Even if he did get the relic and use it effectively after atheon teleports him, he has no way to get back. No one is there to open the portal.