Expressive Rehearsal UR
Look at the top three cards of your library. Put one of them in your hand, one at the bottom of your library, then exile the rest. Until end of turn, you may play the exiled card.
This seems really solid. I would not compare it to a 1 mana cantrip so much as I think I would compare it to something like DDT.
Best case scenario is it is a 2 mana "draw 2" and you put your blightsteel to the bottom of the deck, and that is honestly pretty good. There have been some other reduced cost draw 2's in the past few years that have been pretty good but the conditions on them have not been great for vintage (flying creature, deal direct damage, etc) and DDT is a proven staple but has a built in limiter and choke point.
I think this could be viable in decks that are already playing Izzet colors. Could be just a fun of copy, but it does a lot of good stuff.