Yeah I think we need to be really really careful about the wording on the card though otherwise trader will break the game. I would be in favor of wording it like: Each other players gains a curse card, putting it on the mat. --- If you don't discard a treasure place cards on mat in discard.
I think that avoids the trader issues.
I'm in favor of this idea, too. Plus, if cards on the Soothsayer mat weren't added back into your deck at the end of the game, it would be the only such mat to do that, which seems weird.
I suggest this wording:
Soothsayer
$4 - Action-Attack
+2 Cards
Each other player gains a Curse, putting it onto his Soothsayer mat.
--
In games using this, at the start of your Buy phase you may discard a Treasure from your hand. If you don't, place all of the cards on your Soothsayer mat into your discard pile.Ramifications:
* The -1 point happens immediately, but the more problematic deck-clogging is postponed.
* If you want to reveal Trader, you must do so when the opponent plays Soothsayer, not on whatever buy phase of your own would cause you to put the mat cards into your discard pile. If you do reveal Trader, you get a Silver in your discard pile instead of a Curse on your Soothsayer mat. I like this timing better, because it requires you to have Trader at the right times, rather than purposely timing the mat-to-discard move to whenever you have your Trader in hand.
Should we add a clause saying "At the end of the game, put the cards on your Soothsayer mat into your deck," similar to Native Village and Island? Seems like we should, but I didn't quite know where to put it.
Anyway, that's my vote, but I'm open to whatever people want.