World of Warcraft just added a new challenge mode to it's Alpha called Mythic +. If you're someone who's always thought the WoW dungeons were a bit on the easy side...this will be the challenge you're looking for! Kotaku writes Mythic + will operate similarly to Diablo III's Greater Rift's keystones.
Mythic + dungeons will be limited to 5 players and have keystones players can activate to give special modifiers that make the play through harder but with better loot at the end. Check it out in action courtesy of FatbossTV below.