Warning: This thread is probably going to contain poorly-to-nonexistently marked spoilers for Puella Magi Madoka Magica. In fact it already does as of my writing this. If you're at all the type to watch it and possess an internet connection, though, you'll probably already be spoiled on the big points by now. I'll try not to spoil the ending though.
The strange cat explains his proposition to you. "If you make a contract with me, I can grant you a wish! Any wish your heart desires can be yours. But, in exchange, you will be granted magical powers and be forced to use them to fight evil witches. The witches are dangerous, true, but you can have anything at all in exchange. Surely there is something you want enough to risk your life for it."
"So go ahead! Make a contract with me, and become a magical girl!"
edit: It is now time for the Grand Finale. The rules are different for this last round--everyone has up to three suggestions if they want them, but I'm going to skip any that I don't think will be interesting so I can make the final line of endings as epic as possible.
THIS ADVENTURE IS NOW COMPLETED.