Whenever Zed autoattacks an enemy below 50% health, he deals an additional 6 / 8 / 10% of their maximum health as bonus magic damage. This effect cannot occur on the same target more than once every 10 seconds.
Active: Zed becomes untargetable and dashes to target enemy champion. Upon arrival, he marks the target for death and spawns a living shadow behind the target. This shadow lasts 4 seconds and mimics Zed's abilities. Reactivating Death Mark will cause Zed to switch positions with this shadow.
After 3 seconds, the mark will detonate, dealing physical damage equal to 100% of Zed's attack damage plus a percentage of all magic and physical damage dealt to the target by Zed and his shadows while the mark was active.
Physical Damage:100% AD + 20 / 35 / 50% of damage dealt