Hmm was chogath not broken a few months ago?
http://www.surrenderat20.net/2017/09/preseason-update-forge-your-path.html "Grasp of the Undying - Every 4 seconds your next attack on a champion deals bonus damage, heals you, and_** permanently increases your health**_."
hmm . . .I think riot has a cho-gath fetish lol.
was my first thought...
for honorable mention,
but there's a lot of people who have health who might like this...