Slaanesh's Domination

By tako, in Warhammer Invasion Rules Questions

Slaanesh's Domination says "Action: Reveal up to three cards at random from one target opponent's hand. You may play any tactics thus revealed as though they were in your hand for no cost."

Does the card of the tactic which is played stay in the opponent's hand or can I discard the corresponding card after playing to his discard pile?

Thanks!

if u choose to play those tactics they will go to discard pile.

sorry 4 my english :)