text: Other players won’t be able to play the top card of their libraries unless another effect allows it. If you and another player can play the top card of that player’s library (because of some other effect), you’ll be able to in most cases. This is because you have priority first at the beginning of each phase and step and after each spell or ability resolves. Once you play that card, it immediately moves from that library to the appropriate zone (the battlefield if it’s a land card or the stack if it’s a nonland card). The other player can’t respond by playing that card.