Rathalos, Wrath of Akoum

Flying
When Rathalos, Wrath of Akoum enters the battlefield, deal 4 damage to target creature or
player.
Whenever Rathalos, Wrath of Akoum attacks for
the first time each turn, untap all dragons you
control. If you control 6 or more dragons, after
this phase there is an additional combat phase.