Raiding Party
Action-Attack
cost 5
+2 cards. Look at the top 3 cards of your deck. Discard the Victory cards and Curses and put the others back in any order.
Each other player discards cards from their hand until they have 3 cards.
Cutpurse Coppersmith
Action-Attack
cost 5
Each other player discards a Copper cards from their hand or reveals a hand without Coppers. Each copper in your hand produces +1C this turn.
Illusionist
Action-Attack
cost 4
+1 coin.
Each other player reveals their hand. If they reveal an Illusionist and a Curse, they gain a Curse. If they reveal no Curse, they gain a Curse. If they reveal a Curse, they gain nothing.
Illusionist could probably be made more simple. Normally, you aren't hit if you have a Curse in hand, but if you have an Illusionist as well, you gain the Curse anyway.
Hireling
Action-Attack
cost 4
Reveal your hand. For each different card type among these: Curse, Action, Victory, and Treasure, +1 card.
Each other player with 4 or more cards in their hand reveals an Action card from their hand or reveals a hand with no actions. If they reveal a Mercenary, they discard it. If they reveal a Reaction, do nothing. Otherwise, they discard a card.
Agitator
Action-Attack
cost 3
Choose a card in your hand costing 4 or less. Gain 2 copies of it, placing them on your deck. Each other player reveals their hand. If they reveal at least 2 or more cards with the same name, they discard 1. If there are more than 1 set of cards with the same name, that player chooses.