I have a question about location cards. Do they effect both players? My main question concerns Belly of the Beast and cards like that. 'When the character battle step starts, choose an untapped character in that arena, tap that unit' Can both players use this effect, or only the person that deploys it?? Same things with locations like 'Dagobah System' I guess what I'm trying to ask is does the card only work for the person that deploys it?