Will M. Baker
Thanks, but that thread seems to be dealing primarily with protecting a hero from being destroyed. I'm not seeing my specific question answered.
No, you can't. You can only discard an unplayed card, and the border guard has, by definition, been played already.
Are you getting that from a passage in the rules? The same applies to destroying a card, yet this rule is superseded by the rule that allows a card to destroy itself (see this thread: http://boardgamegeek.com/thread/741153/90-of-ts-is-understan...). So I'm just wondering if there is a similar allowance for a card to discard itself.