Shadow-Sprite, the Biter

Flash, flying, lifelink
When Shadow Sprite, the Biter enters the battlefield, return target creature you control to its owner's hand, and put target creature you don't control on the bottom of its owner's library. That player draws a card.
{2}{u}{b}, {t}: Return Shadow-Sprite, the Biter to its owner's hand.
"Awe, she's so cu... OUCH! She bit me!"