Open-Ended Death Art?

Hi all,

I was reading through the Magic section of the Codex, and noticed that Death Art doesn’t have a call out stating that it is open-ended. However, it is referenced as being “like Sorcery or Enchanting” (both open-ended) and has an option to use Faith (also open-ended) in place of the skill.

Is Death Art intended to be open-ended like most other magical abilities, or is it another exception to the rule, a la Alchemy or Summoning?

Thanks!