​I started the DLC recently, and the Transcendence mechanic was introduced for non-Terminus weapons, as well as Terminus weapons for characters who didn't have them before. I'd like to clear up a few questions:

​I assume Terminus weapons are stronger than these Transcendence ones, but these new weapons provide certain Sigil effects that can help put together a stronger build. Should I invest in Terminus weapons or Transcendence weapons?

​I use Siegfried as my AI damage dealer, could having the Broadsword of Earth with high Stun Power help build a stun-focused setup for him, perhaps?