Void Staff needs a variation

Physicals already get a plethora of options for physical penetration and the two major options provide additional effects (i.e. increased damage vs higher health targets & a grievous wounds effect).

Either:

1. Increase Void Staffs AP Value (80+) and give it 15 flat magic pen. (Without raising its value)

or

2. Create two variations that have different effects. a) Shaman's Staff: AP (80) (magic pen (40%) Unique Passive: Damage is increased by x amount on targets with greater health than you. b) Staff of Malice: AP (80) (magic pen 35%) Flat Magic Pen (15) Unique Passive: Every time an enemy is hit by a spell, a portion of the damage is gained as a temporary shield. The shield lasts for x amount of seconds and scales with level. (note Being hit by crowd control effects will deplete the shield entirely, cause it to go on cool down, but will absorb the non-ulimate CC. 30+ seconds before you can charge your shield.)

A lot of magic damage is easily mitigated by anyone who simply builds Spirit Visage or any MR item because almost every magic resist item used by non-ap champions gives health making the item more effective within itself. Whatever happened to buying MR and then health? Not at the same time.