Rastakhan's Rumble Guide
Hero PowerDeal 2 damage.
Justicar's stats are worth around 3 mana (a 6/3 for 4 mana exists but Justicar can't be played on curve and nobody plays Worgen Greaser anyway). That puts it at slightly cheaper than Shadowform for priests and gives you the same effect (I say cheaper because it only costs one card, not two). I'd say you would have to be in a situation where you want to hero power 3 times in a row for it to be cost effective. That said, it is amazing once you have Coldarra Drake, especially if you also have Maiden of the Lake or Fallen Hero out or played Fencing Coach.
With Justicar Trueheart, your hero power is worth the effect of a 1 mana spell. In this case, the 1 mana spell is Arcane Shot or Holy Smite.
they want their hero power back?
More like regular show THEY WANT THEIR CELL PHONES BACK