Discarded Blade, Renewed Purpose - A Warframe/Halo cross-fic

A weapon, a warrior, a soldier, a blade. He had spent years in struggle and combat, and wished only to rest. His respite is given, and cut short just as quickly. But his battlefield is now far away, and his enemies from even further beyond. His name is Excalibur, and he was the first Tenno. He will be so again.