Ashiok, Dream Render

Effects that instruct your opponents to reveal or look at cards from the top of their libraries will still work. Only effects that use the word “search” are affected.

If an effect says “Search your library . . . then shuffle your library,” your opponents shuffle their libraries even though they can’t search.

If an effect says “You may search your library . . . If you do, shuffle your library” or “You may search your library . . . then shuffle your library,” your opponents can’t choose to search, so they won’t shuffle.