Castles: Duel of Kings

From BoardGameGeek:

Castles - Duel of Kings is a medieval themed, turn-based card game. Set in a time where many kingdoms are in turmoil, the nation is in desperate need of one ruler to unify the lands and settle the chaos. Players will take turns conquering lands and furthering their reign, showcasing their tactical skill to outwit and outmatch their opponents. The players who is best able to utilize multiple strategies to attack, defend and out-maneuver their opponents will have the best chance of being the ruler of this land. In this game luck rewards the bold. Testing your luck and exploring the lands to recruit the powerful gladiators and sorceresses will work greatly in ones favor. Each new turn poses a problem to other players as the state of the lands continue to change. Players fight to maintain the ownership of a castle as they further their efforts to obtain more. After each turn players will gather all newly acquired warriors and alter their strategy to better their chances of becoming the one true king The winner of the game is the player who successfully holds all castles simultaneously. -description from the designer