You need a spell or ability that instructs you to sacrifice, or uses sacrifice as a cost
However, its effect is much more impressive than it seems, and is truly what makes this card a beast in terms of card draw: if the creature it is equipped to dies, you'll draw two cards
Conjurer's Closet $9.99 Blink engines appeal to a certain subset of players (guilty!) and Conjurer's Closet is one that can go in any deck
Doran, the Siege Tower The following things are all true at the same time of Doran, which if you look at nearly every other conceivable Magic card, seems impossible: It shows something about the world it belongs to, it has an intriguingly "different" mana cost and p/t, it demonstrates a never-then-before-seen ability with very few words, and finally the flavor text effortlessly ties the smile-inducing ability, the nature of the character, and its application to our real lives