Is this lifesteal normal? O_O

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She was pretty fed, not gonna lie, but so was Olaf. I still don't find a reason why she was able to take on 3 people and just drain tank them. Items around that time: Riven: DD, Essence Reaver and Infinity + Conq, Bloodline Olaf: Ionian Boots, Ravenous, RIghtous Glory, CInderhulk Garen: Cleaver, Tabi, Jaurim Fist Bard:well he kind of died before in even began, so it doesnt matter
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