Ryan, Dark Dancer

You may pay 2{c} and search your graveyard for
a creature. This creature is Ryan, Dark Dancer's
partner with haste for the turn. Both cards must attack the same opponent this turn.
If Ryan, Dark Dancer's partner is blocked or
killed Ryan gains +1/+1 for the rest of the game.
At the end of your turn exile your dance partner
even if it died.