Gormath, the Gatekeeper

Whenever a Gate enters the battlefield under
your control, you may search your library for a
creature card that has a colour that Gate could
produce and put it in your hand, then shuffle.
Gates you control have "{1}, {t}: Target creature
becomes unblockable until end of turn. It does
not untap during your next untap phase"
He welcomes those who prove themselves welcome,
he eats those who don't.