Anyone think the halo 5 cortana is gravemind? With the guardians policing each civilization how easy would it be to infect those worlds with flood? She has access to a halo ring which could have flood on it she could release. She also said only the created are the masters of the mantle. Weren't the flood created by the precursors? Also correct me if im wrong but werent the flood able to convert forerunner ai? Gravemind could of made her a contingency plan incase chief won.