When Underlord does his Dark Rift and is rifted to wherever and Lifestealer is in one of the rifted heroes, Lifestealer will remain in the in the rifed hero, but when you click on the icon portrait, it takes you to where you rifted. When you burst out of said hero, you do the AOE as it would normally happen, but you pop out in the spot the hero was rifted too.

Match ID: 2596883863
First instance is at 21:13