I wanted to make a card where you get to choose whether forcing a discard or milling would be the better play. I came up with a skeleton for a card, but I couldn't quite get the wording right. I tried a few more variations and got this:
Instead of choosing which effect to do, it does both. Sprinkle in some panache (the bit about mana cost), and you got yourself a nice Dimir card.
Bonus! After going back to the original idea, I finally made the wording fit. Here's that card.