In Modern, you can exploit a repeatable Tutor effect using Wishclaw Talisman. However, there is one drawback: you must give this card to your opponent as soon as you've used it once. But who said you couldn't bounce it back?
If you don't have bounce spells in your hand, then you can restrict your opponent from searching too far using such cards as Aven Mindcensor and Ashiok, Dream Render.
As a result, you will have your card, while your opponent will have no way to use it.