The epic battle between Crixus The Great and the trio of Sakaar, Caesar, and Richard lasted for 30 minutes...
Within the first ten minutes, Crixus The Great was able to adapt to the atmosphere of Planet Jura and started fighting seriously, so the trio was forced to fight seriously as well!
Sakaar alone was supposed to be able to subdue him with the Sea of Blood, but for some reason, the blood vanishes as soon as it comes into contact with the blue flame, and he also feels something telling him to stay away from it, so he was forced to fight from a distance, especially after the Lord's warning.
The Wyvern is afraid of the Death Flame and it attracts most of his attention, but the Purgatory Flame can counter it enough to keep Caesar away, plus there is a huge difference between the level 45 Caesar, and the Wyvern who is level 49!