If for some reason you can't win the game (because your opponent has cast Angel's Grace this turn, for example), you won't lose for having tried to draw a card from a library with no cards in it
Recur one creature to your hand Turn six -- Mill two cards
Kill a Creature with a Sword
Ragavan, Nimble Pilferer [The Most Valuable One Drop] Ragavan, Nimble Pilferer is the kind of one-drop that forces an answer immediately
Read More: When can you try out Magic: Legends 3 Utvara Hellkite Sometimes all you need from your Dragon deck is more Dragons
The Ward effect will make it so that you get to attack your opponent with it at least once in most cases, and if youre attacking with a 5/5 flyer theres a good chance that you will either draw a card or force them chump, either way youre getting at least a 2-for-1 out of the exchange, and thats kind of the best case for your opponent, because if you start drawing cards off of this, its just over