Defender of Osgiliath

Defender (This creature can't attack.)
Whenever a creature attacks you or a
planeswalker you control, that creature's
controller loses 1 life and you gain 1 life.
{3}, {t}: Search your library for a Human card
with converted mana cost 2 or less, reveal it. If
it's a permanent card you may put it onto the
battlefield, otherwise put it into your hand, then shuffle your library.