Vrazen, the Rooftop King

As long as there are four or more creatures are on
the battlefield, Vazren, the Rooftop King can't
be blocked.
Return Vazren, the Rooftop King to its owner's
hand: Target creature can't be blocked this turn. Activate this ability only if there are four or more creatures on the battlefield.
"I does what I likes and I likes what I do."