What Deck Ideas do ya’ll have that are “ahead of their time”?

To elaborate, what are some ideas ya’ll have had for decks that you would genuinely want to build but you don’t believe the technology to make it happen exists just yet? For me it’s \[\[The Celestial Toymaker\]\], every year we get like 2-3 more cards for him, so I know we’ll eventually get to the point where the deck can be solid but it’s still not great. Or another, albeit outdated, example I had was I wanted to build a \[\[council of the four\]\] deck that cared about doing your second something each turn. However since I’ve had that idea, tarkir dragonstorm came out with some flurry cards, and effects that care about drawing your second card each turn have become more prevalent.