1. Herib'dag Chaos Marauder
Stats - Well, I forgot that some spells have life cost instead mana cost, but he can't still use Rage at level one without items.
Cutthroat - targeting unit, casting range N/A. It is rather instant. AoE is too big (how he can swing his blade so far?)
Bite - is charging forward gives additional ms?. It is 4s movement disable at level 1.
Torch - Compared to other Skills it is not worthy levelling. Reduced CD, but mana cost is constant 45, +10as and 5 movement speed per level. Ofc it is giving him pushing and farming powers. It is ok.
Lust - Is it 140 damage, 10 seconds pseudo-track? Scalling is even worse than Torch's one. -5 health cost, +25 casting range, +10 damage.
Lust will make your target bleeding, so you can use the blood trail to semi-warding in this case.
RAGE - lvl 2 Bite-Rage combo seems nice. Is it possible to suicide? The Vengeance buff seems epic (the wave of fire)
It seems like you are forcing players to level up Bite, Cutthroat and Rage. Bite is enough to make a successful gank, Cutthroat is useful in teamfights, Torch will destroy every tower, Rage as a source of damage and fun, again Bite for positioning. Everything seems nice expect Lust, it is only creating bloodpath with no vision, has no more side-effects. Maybe add "disable" hp regeneration?