varzov, master of illusions

flying
this creature enters the battlefield with x +1/+1 counters on it.
when you cast this creature reveal cards from the
top of your library until you reveal a creature
card that brings the total converted mana cost of
all creatures revealed this way to a number above
x, you may play all those revealed creature cards
for free this turn, they are illusions in addition to
their other types.