Eddrass The Calamity

Flying,Deathtouch,First Strike,Haste
when you cast Eddrass The Calamity choose Khans or Dragons.
.Khans -for the rest of the turn if you attacked with at least 5 dragons untap all creatures you control and conduct a second battle phase.
.Dragons -whenever you cast a dragon spell you may have it deal damage equal to its power to target creature or player.