[MID] Triskaidekaphile
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card itself is non-useful but is it so difficult to use this as a win-con? Necropotence or Ad nauseam, draw9, upkeep, win. The good thing is that triska works with cards you would already play in some kind of decks.
[and yes, I started this just because we are talking about "opt" and"doom blade"]
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Card could be a win con but it is competing with cards that don't ask you to pas the turn and keep a creature alive with things like oracle in the blue decks and things that don't require blue mana or passing the turn such as tendrils in the black decks. It isn't hopeless but it has very fierce competition and little to make it stand out. Another card that is worth remembering even if it likely has no home in the current state of vintage.
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In a format with 4 gushes I think this could be fantastic, but as of right now it may just be to hard to pull off. It could be ok if the other things it brings to the table (no max handsize and repeatable draw engine) were needed, but I think it may fall short.
EDH and cEDH all star for sure.