Nathan, Dauntless King

When Nathan, Dauntless King enters the battlefield,
each opponents' creatures gain -4/-4 until end of
turn. If a creature dies this way, this creature
gains triple strike and haste until end of turn.
Dash, {1}{u}{r}: You may pay the dash
cost instead of the casting cost. If the dash cost
was paid, return Nathan, Dauntless King to its
owner's hand at the end of turn.