Underdark. This realm extends under opponents' Birthright realms, allowing them to be attacked by this player's champions and allies, regardless of position or restriction.
Copyrights:
TSR
Wizards of the Coast
This realm allows the player to attack Birthright realms in other players' formations, even if the realm you wish to attack is not in the front rank of it's formation. This realm also lifts restrictions concerning movement ability, such as Mur-Kilad (8/BR) restriction against flyers and swimmers.
UnderCerilia does not lift restrictions against the type of champion that may attack. Awnsheghlien still would not be able to attack Tower of the Sword Mage (11/BR), even with UnderCerilia in play.
This realm is a great addition to the other Underdark realms that have similar powers, giving the player many choices to attack. UnderCerilia is considered both Birthright and Underdark for world decks built using either world.
In an attacking deck you can do much worse then the Under-realms. In this type of deck you may also wish to include Nature's Throne (461/4th), which has a power similar to the Under-realms. This gives you the ability to attack again just about anywhere you choose, and causes your opponents numerous headaches.
