User blog comment:Poisonshark/Custom Champion: Erin, the Swift Palm/@comment-7709681-20160709233513/@comment-25235491-20160710104106

It's "purposely" left incomplete. The damage is increased from the base damage (which is noted as ), but noting max damage with the execute effect is useless because max damage (200%) is reached when the opponent has 0% life, which naturally isn't a possible case.