Imperius in HotS has an ultimate that would be really awesome in League
Imperius' second ultimate, Wrath of the Angiris, lets him dash forward, grab an enemy, and then forcefully reposition them. This does not work like Skarner's ultimate (which is a tether pull); here's an excerpt of how it works.
After 0.75 seconds, charge in the target direction, lifting the first enemy Hero hit into the Heavens. While in the air, Imperius can steer the landing location by moving. After 2 seconds, slam the target into the ground, dealing damage and Stunning them for 1 second.
For an all-in diver Champion, this would be pretty sick. And before you say "sounds broken", it can miss.
Rip Translocator.