You draw 7 cards to start with. so you have 53 cards left.
So if the last card of your deck is the ball, well you will loose.
After "recalling" aplenty you will be left with 2 cards in your library.
If you cast recall then, you deck yourself and simply loose.
You need to play with at least 3 balls or mulligan down to six.
Timetwister makes you shuffle your graveyard into you libary!!! You cannot deck yourself and after a while you will get a fireball and have enough mana to kill him.