The Orc Pit

: The Orc City enters controlled by whoever destroyed Erebor or The Lone Mountain. Creatures can´t attack you while you control a Fortress.
: At your upkeep, create a 1/1 black Orc creature token. Once each turn you can sacrifice an orc creature token to give +1/+1 to target creature.
: If Dwarf Player destroys The Orc Pit, instead gains its control and transforms it into Erebor, The Dwarven Citadel.