(1) At the start of your turn, you have 2 of me and 3 coppers. You play the first one of me. You play the second one of me, which you knew would be a useless play, other than that it highly annoys your opponent. You enter your buy phase with $3, 1 buy, and an irritated opponent. What am I?
(2) I am in your hand, but I am neither a Treasure, nor Action, nor Victory, nor Curse card. What am I? (There's only 1 of these that i can think of, but there may be more.)
(3) I can make playing 1 copper once give you $2 instead of just $1, but I am not Coppersmith (nor am I Counterfeit, because you only play the copper once). What am I?
(As always, I've done my best to have 1 and only 1 answer for each card, but there is almost always more valid answers that I hadn't thought of.)