Description: When Elise used Rappel and Rengar used his passive Unseen Predator from a brush onto a champion chasing us, it revealed the enemy team through the fog of war by their nexus for a second, when we were all the way in the middle of blue sides wolf camp and wraith camp.
My team: Elise, Rengar, Xin Zhao, Varus, and I was Sona. The enemy team: Ezreal, Olaf, Kha'zix, Soraka, and Diana.
Edit: I'm not sure as Rengar did not go invisible for his ultimate, can you use your ult as Rengar, while not going invisible, and still reveal enemy champions if you use your passive immediately for a second?
Edit 2: I can confirm that Rengar's ult range was able to see the enemy champions at level 3 from nexus turrets to destroyed mid tower in between wolf and wraith camp. Although he didn't enter stealth in his ultimate, you can still reveal champions and use Unseen predator onto an enemy champion with his ultimate.