Revert Duskblade - The Item has Nearly No Counterplay Now
I think the original duskblade was a lot more healthy:
Unique Passive – Nightfall: After 2 seconds, deals 90 (+ 25% of target's missing health) physical damage. If the target is taken down before Nightfall dealt damage, the full cooldown is refunded.
Before, there was actual counterplay. The person who was using the item had to dedicate time into killing their target, leaving the target and their allies a window of opportunity to react appropriately.