In 1v1 formats, its essentially a waste of your mana and your time, but when you have three opponents actively casting spells each turn, Rhystic Study transforms into a powerful draw engine

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Anowon is a risky play, though, as it can't sacrifice itself, and could potentially force you into sacrificing Liesa if played too early
That's why I am running things like Rakdos Locket and Mind Stone