Well designed character with a purpose in mind, but I'm really concerned about his second ult, "It's Just a Flesh Wound". Black Knight better have ETC's attack damage, because almost every other character in the game can kill an assassin or healer in max 15 seconds with just auto attacks. Having him attack 20% faster, with the ability to stutterstep and keep up with anyone but Lunara and Rehgar is really scary, and being unable to cc him away is a big deal as well. What if Black...

I like the concept, but I feel like she's trying to fit into a niche that Zeratul already fills better, a melee assassin who jumps out of nowhere and bursts you for a decent amount of damage with some delayed damage as well. Other problems include complete lack of survivability for a melee hero until 13 and preferably 16 (otherwise unusable if you didn't plan to initiate with Vanish), no greed mechanics (nothing like Greymane's Inner Beast, Thrall's Resilience, Artanis' shields, Valla's...

There are serious problems with this design. Both his trait and one of his ults include randomness. Randomness is not skillful or fun. One of his ults also instantly kills the target, with very little risk to the player. This is not skillful or fun. Compare to Kael'thas' Pyroblast, which is a decently balanced heoric ability. It can almost one-shot heroes such as Valla and Nova, and requires 2 seconds of channel time and risk. Kael'thas has low mobility as well, to increase risk. It...

Personally, I'd categorize him as a specialist.

Well thought out, and you left the one damage number here blank, so we don't have to worry about his damage. As a concept, this is quite new - a focus on a single summon fighting alongside you, with abilities and a buff focusing on that ally. Rexxar could potentially play several different roles, depending on what talents he gets. I note that the bear and boar both would benefit greatly from certain kinds of buffs to Rexxar himself. I've never seen a "have 15% greater hp" or...

Unless you become invincible like Abathur, the Adjutant will be useless for defense, and useless for attack until level 10. She'll be the easiest hero to gank ever, because she needs to risk her neck just to control something that takes time to control. In that time, you'll get ganked by any dedicated push. How far and wide is the flamethrower? What are the cooldown timers? The biggest weakness here is that she has no push power whatsoever. Half a wave of minions doesn't mean much...