Stone Mirror Dragon

Defender, Indestructible.
Evolve (Whenever a creature enters the battlefield
under your control, if that creature has greater power
or toughness than this creature, put a +1/+1 counter
on this creature.)
When this creature has a power greater than 2,
it looses Defender and Indestructible and gains
Flying. At a power of 4 or greater this creature
also gains Vigilance.