If this unit is deployed in a non-draft game while in a split-faction battlegroup, it is destroyed. This unit can not be Reanimated. This unit has Iron Will (This champion cannot be Charmed, Possessed or Dominated). Only one copy of this rune may be played in a Battle Group.
Heroes used to be strong but have become less popular. Due to losing HP from opposite factions, they are usually only in Full Faction decks. Thus, they were used as a balancing mechanism to make full faction decks more powerful but see less play as now.
Note Hero refers to the faction of the champion it is on, so if Mimic copies Hero, it will be relative to the faction the champion it was used on.