How can it be possible "Critnivia"?

I just don't understand, from where {{champion:34}} get crits? No items for Crits, no Zeke's Harbinger{{item:3050}} in their team, no runes and Masteries for crit, and i don't really remember that Anivia have some kind of passive for crit, or may be i just don't understand game mechanics? And it's not the first time where AP champs crit that hard! Hope you can explain me this. second screen, runes {{sticker:zombie-brand-clap}}
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