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Vilis doesn't draw any cards (well it has the activated ability but that's nowhere near as mana-efficient as Griselbrand) if the reanimation spell in your hand is Animate Dead or Exhume

I would...

Nice result
The Dinosaur is working for everybody then?
Seems like a cool deck

It's so much worse vs spot removal, strix, jace-bounce, doesn't help to flashback therapy, etc, so I'm not overly excited about the fact that it's only 3 mana.
It does seem like a potential upgrade...