スリの一味
あなたのターンの開始時、１友好を支払ってもよい。
そうしない場合、手札が4枚になるように捨て札にする。
Gang of Pickpockets from Dominion Strategy Wiki
At the start of your turn, discard down to 4 cards in hand unless you spend a Favor.
Gang of Pickpockets is an Ally from Allies. Unlike most Allies, instead of using Favor tokens to earn a bonus, Gang of Pickpockets extorts Favor tokens out of you by making you discard if you don't pay them.
https://gyazo.com/4ab23b7eaa16112edc3efb787bc086dd
ドミニオン Wiki
https://wikiwiki.jp/dominiondeck/Gang%20of%20Pickpockets?word=スリの一味