Can Vengeful Oath damage good creatures?

[SamuraiStrudel]

In the first paragraph it specifically mentions hunting evil creatures, which is flavor, but in the second says that lay on hands can damage non-evil creatures. I was wondering if that means a champion could use it to damage good creatures? If the ally being hurt is good and the one doing harm is good, is it just down to the champion to determine that the attacking creature is evil?

[thenobledrake]

The mechanical effect of the vengeful oath feat is

"You can use lay on hands to damage a creature you witness harming an innocent or a good ally as if it were undead; in this case, lay on hands deals good damage instead of positive damage and gains the good trait. This good damage can affect non-evil creatures."

Normally creatures would have to be undead for lay on hands to deal damage to them, the feat changes that to include any creature that has been witnessed doing harm to an innocent or an ally of yours with a good alignment.

Normally when lay on hands deals damage it is positive type, the feat changes that to good type when used in the new circumstance of use.

Normally good type damage only affects creatures with evil alignments, the feat changes that for this specific instance of good type damage.

[Lost In Limbo]

I'll agree, the line "This good damage can affect non-evil creatures" overrides the general "These damage types apply only to creatures that have the opposing alignment trait." of alignment damage.

That removes the restriction of an aligned damage, but still allows it to deal extra damage to a creature with a weakness to good such as the various fiends.