A viable BH team in Arena ? Perhaps even more than viable.

His payout actually heals pretty well in practice. 15% a round after all BH go. Under his own lead I think he will be harder to kill than KRU as he dispels debuffs on himself in addition to healing on enemy debuff\resist.

Even at 3* he allowed me to complete the Rebel and Rolo event where my team could not come close before. At g8 3* he has 35k EHP and 180 speed.

Edit: And actually its Health AND Protection so its 30% EHP per round.