Simple Q&A by RAW for Pathfinder 4

[Mehangel]

A20: You can read it either way because English is funny like that. It can be read as "Negative energy (all types, such as this example of negative energy)" or as "Negative energy (that works like this example of negative energy)". Judging by most of the examples I've seen though, the first was the intended one. What negative energy specifically were you wondering about?

Well the conversation came up in a game where we were using Drop Dead Studios: Spheres of Power where someone was utilizing the Destruction: Nether Blast to deal negative energy and heal their undead... But I asserted that it could apply to any number of spells for pathfinder...