Diablo is arguably the single strongest character released in the game to date, and the player market can have a huge impact on a cards value
As well as being accepted in organized play, the set is also fully draftable
Ruby cards have an aggressive approach to their playstyle, with abilities and effects that focus on boosting Strength or Willpower for Challenges against other Glimmers or giving the player extra Lore tokens from making Challenges and winning them
When doing this, you strengthen your already strong characters since you're playing Ruby, potentially creating a very scary board state for your opponent to stare down
You can quest for a ton of lore, he comes with two abilities and comes with some powerful stats
However, it has a secret weapon in the form of its ability