Death's Defied Zilean

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That doesn't make alot of sense though. The PD showing the # of times it saves your life is making the dmg reduction passive more transparent. The zilean ult is a visual that will show an animation like Guardian Angel if you get revived through zilean ult. The player getting revived will also notice this.

That's true but you're not going to manually count how many people you saved with your ultimate most games.