It's not meant to be subjective. "A snake so fearsome that a god would rather trick it than engage in battle", "the greatest swordsman in the world, easily able to cut through a storm of arrows without a scratch", "a man who can engineer anything". Big, dramatic things that would help change the fortunes of a nearly-wiped-out group.

Whilst uh... I'll be honest, one of the native characters is probably just as good at buffing and debuffing as that; doesn't require to be put in any position of gamemastery like the dragons and doesn't require the enemy to say "Yes, I'll let you make an advantage!" It's too self-limited.