Zz'Rot Portal Change
Make the item have a cool down of 100 seconds and make it be able to hold 2 charges. The cool down between uses is 50 seconds. Both cool downs are reduce by effects that reduce item cool downs. Duration down to 120 seconds.
This way, it can add a lot of pressure across the map on it's own. It will likely need adjustments past this, such as reducing the every 4th Voidling bonus to like 7.5% or 8% total health, maybe reduce it to 50 armor and magic resist from 60. I just feel like giving it two charges would make it an item worth buying more often and overall more interesting.
