Ominous Pact ARAM Augment

Your abilities now have a health cost of 5% current health to cast them. In return, you gain ability power based on your missing health, up to 75 – 150 (based on level) at 70% missing health, 0% – 50% (based on missing health) bonus movement speed, and 0% – 20% (based on missing health) omnivamp.