When attacking any realm in this player's formation, the attacking player must discard a card from his hand or pool for each champion and ally sent forward.
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TSR
Wizards of the Coast
This is an AD&D realm, and can only have holdings that are AD&D or that can be attached to any realm.
The Den of Thieves is a very powerful realm when you plan on defending a lot. Because its power affects all the realms in a formation, it may be wise to place it in the second rank or farther back, so it isn't easily attacked. Also, any holding that can protect it from events and/or spells would help keep this realm safe.
When the Den is in play and unrazed, any player that attacks this player's formation must discard one card from either his hand or pool for each and every champion and ally that is used on his side of the battle. Because this affects the entire formation, realms that can defend twice, like The Trollmoors (9/4th) and Nibenay (226/3rd) are excellent choices to include in a deck containing the Den of Thieves. The same thing goes for champions that can defend twice.
In order to get the most use out of this realm, attach a holding like Geneva Conclave (Promo 2) and use Beneath Castle Drawmij (25/DU) dungeon card to protect the holding. This basically protects the realm from any non-combat effects. Now combine these cards with any other cards that force your opponent to discard cards. Examples include the Athasian Sloth (230/4th), the Cat Burglar (78/NS), and Lady of Fate, Avatar of Istus (42/PO). Add The Ring of Winter (455/4th) to one of your champions, and you can keep your opponents' hands down to almost nothing.
This realm's power applies to any allies sent forward. Thus allies gained through the use of other cards, like the Axe of Dwarvish Lords (457/4th), are still required to pay the fee when used.
