Basically the problem is that Abyssal Skull is currently a useless item with absolutely no reason to build it. It used to be got as a support item to give carries free life-steal while they built an additional orb.
My remake of the Abyssal Skull is to make it an item catered to initiators, one that provides survivability and support the original Abyssal Skull provided. The cost and creation of the Abyssal Skull will be different due to this increase of utility.
+15% Base Damage
+0.8 Mana Regeneration
15% Lifesteal to all allied melee units in a 900 radius.
Total Cost = 2050
+1 Mana Regeneration
Abyssal Vigor Aura:
15% Lifesteal to all allied melee and ranged units in a 900 radius.
Abyssal Terror Aura
-15% Base damage to all enemy melee and ranged units in a 500 radius.
Total Cost = 2925