The ultimate sacrifice - to create a unique class race combo

[Ennewi]

Blood Mage
No mana bar, only HP is used when casting spells.
At level 12 a blood mage gains the ability to land critical strikes, or crippling blows while in blood frenzy.
Crits siphon % of damage dealt and transfer it to the caster. A larger % is transferred from lethal spell damage.
Blood frenzy: The same 40% health threshold as Warrior's berserker frenzy, with the benefits applying to spell damage instead of melee attacks.

Standard elemental pets replaced with...
1. A sinuous/muscular elemental that procs lifetap.
2. A skeletal elemental that backstabs.
3. ?
4. ?
Pet takes on the appearance of an azarack in the Plane of Sky.

Wake of Rallos Zek: Channels the will of the Warlord to change the weather in the current zone to rain down blood. Consumes a Fire Opal when cast.
Treeform / Spirit of Oak: Always shows as a blackened gnarled tree, regardless of the zone.
Reclaim Energy: Reclaims hitpoints.
Call of the Antihero: ?

Based on flavor, more so than functionality.