I use Emissary of the Hightower to play Hidden Thorns from my discard pile, while also controlling The Queen of Thorns. After the event's effects resolve, do I place it in my hand, or do I remove it from the game?
Does one of these replacement effects have priority, or does the "most recently initiated" effect apply (which one?), or does the first player decide?
Emissary of the Hightower
Reaction: After Emissary of the Hightower enters play, choose an event in your discard pile. Until the end of the phase, you may play that event as if it were in your hand. If you do, remove it from the game instead of placing it into your discard pile.
Reaction: After you win an challenge by 5 or more STR, the losing opponent chooses and discards 2 cards from his or her hand. Then, if you control The Queen of Thorns, return Hidden Thorns to your hand instead of placing it in your discard pile. (Max 1 per challenge.)