Gryph, the Dragonhold

As long as you control another legendary creature, this creature has +2/+2, flying, and is a Dragon in addition to its other creature types.
{4}{r}{r}, {t}: Put a 5/5 legendary artifact creature token with flying named, "Yolmar, Gryphon's Slayer" onto the battlefield.
{3}{g}, {t}: Put a +1/+1 counter on each legendary creature you control.