As neighbors who had been at odds for quite a while, Uriah and Daniel knew their respective characters, skills, and arsenals pretty well.
Of course, cultivators made a point of keeping their trump cards hidden to prevent enemies from devising countermeasures. However, those didn't exactly come easy.
Uriah had one advantage in Amber. His direct access to a different noble art, without restrictions from wariness toward untrustworthy masters, gave him far more to work with, facilitating the creation of trump cards.
The splitting, teleporting spears had been one such trump card. Amber actually had played a role in building the disposable weapon that pierced all of Daniel's defenses, too.
Daniel also had the issue that formations weren't exactly portable, but he had solved that flaw in his own way.
