Well Protector of Lorien is an attachment and can be used the 3 times due to each 1 being a seperate action and still being in play. The event when played is played and gone. I am sure that is not technical of an answer.
Yeah, that's what I thought.
As for Dúnhere, I read it he only gets the bonus when he is doing both: attacking alone into the staging area. When another hero joins him, his bonus is gone...

