Gomfrenak, Fey Elder

Whenever a creature enters the battlefield, if no
other creature has a mana value equal to that
creature, you may search your library for a
creature card with equal mana value, put it onto
the battlefield with a wish counter, then shuffle
your library. The same is true for power and toughness.
At the begining of combat each turn, Gomfrenak
gets +1/+0 for each permanent with a wish
counter on it.