Halnar, Draconic Demigod

Flying
{1}{u}{b}{r}{g}, {t}: Target dragon creature you
control gains +1/+1 for each dragon you
control. If you control ten or more dragons
untap Halnar, Draconic Demigod.
Halnar, Draconic Demigod has indestructible
if you control five or more other non-token
dragons.