Joltighar, Scarland Tyrant

Flying, Devour 5, Haste, Menace
Other Dragon creatures you control have
Reverence.(Those creature gets +1/+1 as long as you control a legendary creature.)
Ferocious -- Whenever Joltighar, Scarland Tyrant attacks, if you control a creature with power 4 or greater, Joltighar, Scarland Tyrant gets +1/+1
until end of turn.