If I have a bunch of A-boms in my opponent's territory, I only get to discard one card when my opponent draws, right? Personally, I could argue either way.
You can only have one Abom in a persons territory at once, Via the cards Identifier.
Abomination of Desolation
Type: Evil Enh. • Brigade: Black • Ability: None • Class: None • Special Ability: If used by a Greek, place in opponent's territory. Each time opponent draws cards (except during draw phase), you may discard a card in that territory except a Lost Soul. • Attributes: False Religious Practice,
Limit of one in territory • Identifiers: OT, False Religious Practice, Limit of one in territory