道化師
+2 Coin
Each other player discards the top card of their deck. If it's a Victory card they gain a Curse; otherwise they gain a copy of the discarded card or you do, your choice.
Jester is an Action-Attack card from Cornucopia. When played, it makes each other player discard the top card of their deck, and either gives them a copy of it, gains you a copy of it, or gives out a Curse. It can thus be either a junker or a gainer.