Foresight also gives you a way to respond to triggered effects on your Show and Tell. While people tend to be cutting/trimming Enter the Infinite, Foresight can have value in providing you a stream of cantrips to find your Emrakul or w/e.
Example: You have Show and Tell, Omniscience, and Cunning Wish only. The coast seems clear, so you go for the Show and Tell, planning to Wish for Foresight, Foresight into Wish + Impulse + Cantrip, and parlay that into some sort of win (if you know the top card of your deck can win the clash, you could just wish for Release the Ants).
But, oh no, the opponent brought Ashen Rider to class! If you don't play Foresight, the best you can do here is Wish for Dig Through Time (or Intuition for Dig Through Time) and try to set up a string of instant-speed cantripping into Release the Ants or find a main-deck Trickbind, or find Wish + cantrip so you could Wish for Trickbind and keep going off. If you just Wish for Trickbind directly, you obviously can't go off (no cards left), but all these possible paths involve a lot of luck.
But, with you playing Foresight, this become an easy thing to handle. Foresight can pull Trickbind from your main, or Wish > Trickbind from the SB + 2 other cards to keep going off with. Since people seem to be cutting EtI, not everyone can fish for Intuition > EtI, but that's another strong play. I also don't see a lot of Dream Halls, but if you are running a build with 3+ EtI, Intuition and Dream Halls, there's a neat line you can do with Dream Halls, Wish, and 2 blue cards.
- Put Dream Halls into play.
- Discard 1 card to play Cunning Wish for Foresight.
- Discard 1 card to play Foresight for Intuition, Impulse/Trickbind, and a 1 cmc card (this is currently your entire hand).
- Discard 1 card to play Intuition for 3 Enter the Infinite.
- Discard 1 card to play Enter the Infinite. You are now holding your whole deck.
- Discard 1 card to play Omniscience.
- Win game.

