Made Redeeming be performed only once in a turn;
Added Retaliation to most of the warriors.
Removed UniqueWarrior behavior;
Added Unique property (default to true) to Warrior.
Removed Hero card;
Mana is reduced by 1 if Redeem is performed;
Fixed incorrect implementation of Passive_Aura_ReduceDamage_NDamage;
Clamped warrior's life to MaxLife only in Resolve.