This is a future argument settler.

Little and Less

You may play this card during any response window.

Response: Until the end of the phase, players cannot play any additional responses. (Cannot be canceled.)

Just to clarify, this means that you cannot play events that trigger as a Response, right? 
If so, I really wish it said that more specifically because you don't play Responses, you trigger them.  You play Events, Characters, Locations, Attachments, etc. Better text would be "…players cannot play any Events that trigger as a response." if it only affects Events.

Not that I can think of any other card type that could be played as a Response, but I just want to be sure they didn't mix up terminology designing this event and don't want to add it to my deck assuming it works differently than I think.

~Haven't they learned to be as specific as possible? 

 I think it means all response from hand

Bomb said:

I agree, the wording is sloppy. If they meant that players can't play Events with a Response, they should've said so. If they meant that you can't trigger any responses for the remainder of the phase anymore, they should've said that. The way it's worded, there's no telling how it works without asking FFG. Unless there is some precedent for the "play responses" lingo us puny mortals ain't aware of, in which case we'd have to wait for ktom to make an appearance.

It's sloppy templating on FFG's part.

The precedents would be "cannot trigger additional responses" or "no responses can be used" if it was intended to stop all Response effect.

The precedents would be "cannot play events" if it was intended to only stop events.

Since the template precedents that stop events only always includes the word "events," I am inclined to think that the word "play" was substituted for the word "trigger", rather than to think that the word "events" was left off the card entirely. I would treat it as not being able to trigger responses (as opposed to not being able to play events with responses) until the official errata cleans up the language.

 This card has all my deck building senses atwitter.

Thank you ktom. 

I just sent the following question to FFG via the Rules Questions page:

There is a new event named Little and Less with the below text:

"You may play this card during any response window.

Response: Until the end of the phase, players cannot play any additional responses. (Cannot be canceled.)"

Since you don't "play" responses, what kind of responses does this event prevent from being triggered? Is it meant to keep players from playing Events that trigger as a Response? Or is it meant to keep players from triggering any kind of Response for the remainder of the phase? Or is it something else entirely?

Thank you very much and I look forward to hearing from you!

I will post their response if and when I hear back from them.

 excellent, please let us know once penfold responds :P

Already got an answer from Damon Stone:

"It prevents that playing (triggering, activating, using) any and all responses."

This event is going to be meta-changing I think.  It's a global Brienne of Tarth for Responses. 

 biggest winner is martell HH. they can recurse this event forever with Princes Plans and prevent all responses for the entire game. Nutso! I LOVE IT! To those prepping whiney posts…….you asked for a meta shake-up, now you got it. I applaud this event. GG Damon.

dcdennis said:

Of course, it royally screws Maesters (the Agenda, and most links, are Resposnes…) and Siege decks. So it's kinda silver-bulletish, but still has plenty of uses if your opponents are playing something other than Maesters or Stark-murder.

One of the really fun things is that it is going to make people FAR more aware of the timing windows and when Responses can be played. For example, it's best use might be to go first in Challenges, finish all of your challenges (including Responses to them), then play the event as a Response in the framework action window where "active player" status changes to your opponent. (Oh yeah, that's an action window, which has a Response step!).

 which brings up a question ive been meaning to ask. can you respond to an action that doesnt happen? meaning if both players pass actions in that window, can you still respond with this event?

I wonder if this event will just eliminate the ability to use Responses during the challenge phase in Melee if everyone is running 2x - 3x of it.

dcdennis said:

dcdennis said:

So, for example, if you don't use this Response in the "start phase" framework window that begins the challenge phase, and all players pass on triggering an action in the first "pre-challenge" player action window, you won't get a chance to play this event until the Response step of the "initiate challenge" framework action that begins the first challenge.

If you want to make sure no responses at all get triggered during any given phase, all you need to do is play this during the "beginning of the phase" framework action window and you're set.

 I still have a question: can little and less be played during the save/cancel response window? 

Sulpures said:

all response window