Fblthp, the Cowardly

When Fblthp, the Cowardly enters the battlefield, if there are more than 4 creatures in play, return target creature to its owner's hand.
When Fblthp, the Cowardly becomes the target
of a spell or ability, if there are more than 4 creatures in play, exile Fblthp, the Cowardly, then return it to the battlefield transformed.
"I had always hated crowds..."
-Fblthp