Warlords are special challenges that yield bonus rewards. A variety of Warlords are available throughout the week, with each one featuring an infamous adversary. Up to 2 Warlords will be available at any time, however you can temporarily unlock additional Warlords with Gemstones.
Warlords stand out from your typical battle due to the special conditions per challenge. Each Warlord has a condition that will affect how you take part in these battles.
Looking at "The Bright Lord" Warlord above, you will notice that several Champion Classes cannot take part in this challenge. Some Warlords have strict conditions, while others are more relaxed in that one or two Champion Classes may be excluded. Pay special attention to these conditions, as each Warlord stage carries a recommended Power level. You will want to ensure the Champions in your roster not excluded from the Warlord have an appropriate amount of Power!
Like your standard battles across Mordor and Middle-earth, each Warlord stage carries a cost in Energy. You will want to ensure you have enough Energy before launching your battle! Also like normal battles, you can manually select - or Auto-Fill - your Champions and Orc before jumping into the fight.
Take note that you only have 2 Warlord battle attempts available to you per challenge, per day! These attempts will also be used if you replay a previously-completed Warlord stage, or Raid a Warlord stage that was completed with a 3-star rating.
The bottom left corner of the Warlord challenge card will note how long an open Warlord will remain active for. This timer will also display when locked Warlords will be available.
You can spend Gemstones to unlock any locked Warlord, giving you 2 attempts at it. If you use up your 2 attempts, the Warlord will lock once again. Note that once you unlock a Warlord with Gemstones, you have a limited amount of time before the Warlord locks again.
Good luck in your battles!