Ashiok, Dream Render

If Ashiok’s last ability targets an opponent, the cards put into their graveyard will be among the cards exiled by the ability. No player may take any actions between the time the cards are put into a graveyard and the time your opponents’ graveyards are all exiled.

Spells and abilities your opponents control may cause other players to search their libraries, and spells and abilities you control may cause your opponents to search their libraries.

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