Crown of Thorns

When Crown of Thorns enters the battlefield,
look at the top three cards of your library.
You may reveal a creature card from among
them and put it into your hand. Put the rest on
the bottom of your library in any order.
{2}{g},{t}: Target creature you control gains
deathtouch until end of turn and gains "when
this creature dies, return that card to its owner's
hand at the beginning of the next end step."