Oops! All Spells!
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Is this worth looking at again? There have been a few printings that have drastically helped it. [[Once Upon a Time]], [[Force of Vigor]], [[Thassa's Oracle]] and recently [[Agadeem, the Undercrypt]].
I think you could probably run Force of Will and Misdirection in the right build too. -
If this helps, Joe Dyer included All Spells! in his recent Vintage 101.
https://www.mtggoldfish.com/articles/vintage-101-modal-magic