Athros, King of War

Flying, First Strike, Haste
When Athros, King of War enters the battlefield create 2 4/3 dragons with flying and haste.
Athros, King of War gets +1/+1 for each creature in your graveyard
Pay 4 life and sacrifice a creature: Athros deals {x} damage to target creature or player, where {x} is its power.