Am I right asduming that Secret Well pseudo-trashes the card it sets aside? Because it doesn't ever state that the cards return to your deck. Same goes for itself.
That card is discarded.
Some cards are revised. Next is one of them.
Nightingale
cost $0* - Action
Reveal three cards from your deck. Trash any number of non-Treasure cards. Discard the rest.
You can’t buy this if you have any Treasures in play.
She was Nurse, cantrip trasher, crazy. One day I thought "isn't costless Kingdom card nice?" It must not be so powerful, but has to be useful. I thought "hey, Nurse, do you like Treasures?" She is willing to help you without any Treasures. She doesn't mind Treasures. Trashing 3 cards without decreasing your buy power. Attractive, isn't she?
Maleficent
cost $3 - Action - Attack
+$2
Each other player gains a Curse.
When you buy this, put all cards from your hand onto your deck.
She was Broom. Its reaction part is used for another card. I needed a Curser costing $3 or $4 in my expansion. I tried some, but won't work. I tried penalty version, and here she is. Once the penalty was on-gain effect, but one day, my friend bought Messenger.