Konf

When I saw this, I thought that there's got to be some amazing deathrattles coming in. Because somewhere somehow during the design process this card must've been so broken to have had its stats and mana cost result in what …

Nope, these are token cards that can be generated only by directly by the cards they get produced (think of Spare Parts from GvG, but as minions).

Truth be told I wasn't expecting to see all 5 villains embodied as Legendary cards outside of Rafaam, because I thought all of them are represented either as existing playable cards or a portrait, but I'm glad I was wrong. …