You can use 1 of the following 3 effects:
When this card is selected as an attack target by an opponent's monster, you can remove this card from play to draw 1 card and end the Battle Phase.
You can remove from play this card and 1 face-up monster you control, and draw 2 cards.
You can remove from play this card and 1 card from your hand, and place 1 card from your Graveyard on top of your Deck.