How does Kled/Skaarl work with %hp?
Items like 
or skills such as Elise venom Q, or Volibear Chomp W?
Do these treat both Kleds and Skaarl HP as combined or separate HP pools?
4 Comments
Think of Skaarl being gone just acting as a cap on his healing. %hp should work based on their max HP together
Kled does not gain any bonus health, so any modifiers of percent health added would be done to Skarl's HP. Don't know about percent damage though.
You should test it out in a custom with a friend who has Kled and just run the numbers to see if your expected values meet your experimental values.