While I can't say I've ever seen much evidence for spirits myself, given the range of abilities possible it would be foolish to dismiss such a thing completely.

[After all, even if spirits don't necessarily exist in his world doesn't mean they don't exist in others.]

Can I ask just how common spirits are? Of course I'm sure it can depend on the setting but as an example, how many have you come across here? Or are they a rarity even where you're from? [He's well aware of a decent range of lore regarding the origin of spirits and he's curious about just how common they are.]