Is it just me, or do all 3 of his passives suck ass?
King of the minotaurs only gives 500 hp, 30 weapon damage, 1000 mana. Really not that impressive considering it cost you 3 skill points, and you had to pay for all the minions which costs at least 1800 or so, not to mention I think you only get the bonus as long as they're alive, so if they die to AOE, you lose the bonus.
Sacrifice blows, only time I can see this being useful is if the game gets into mega lategame where there's 3.2k crits flying around and the heal could be useful. With 500 damage, you only heal your nearby allies for 200 at level 3 Sacrifice.
I don't know about the last one, I'm guessing it applies to minions, the chance to proc it seems really low, and the damage not amazing.
He's tier 2 imo, much like DA. No stun/snare/interrupt really hurts his killing potential.