Putting aside the specifics of the Emperor of Myriad Forms' inheritance, just the six Tomb Guardians left by the top college of All Features are all Powerful Divine Power. This alone is enough to make any top-tier force green with envy, ready to pay any price to help him defeat his competitors.
Correspondingly, both Shadow Wind and forces behind Phoenix would also lend their full support.
In other words, the competition now is not only among the three of them but also a struggle between three top-tier forces.
Among them, he appears to be the weakest on the surface; it's the discussion of the generals on how to improve his chances of winning.
The first step, of course, is to present the evidence of Shadow Wind's secret assassination attempts and then use it to negotiate benefits within Shadow Wind's War Zone 6.
