Why is Morgana r karma's w

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W. Karmas chain is her W, and iirc it does %HP damage with a %missing HP heal. Its also single target.

Morganas R is an AoE that works on the same tether mechanics as Karma and Leblanc, and deals more damage than both with a higher duration root i think?

https://boards.na.leagueoflegends.com/en/c/gameplay-balance/LiIIaBhw-why-is-malphite-r-zacs-e

Don't bother. He's just bullshitting around for the lolz.