Bowser, King of Koopas

Reach, trample
When Bowser, King of Koopas enters the
battlefield, create a 2/7 black legendary creature
named Bowsers Castle.
When Bowser, King of Koopas would be the
target of a spell or ability cast by your opponent,
create 3 green and red 2/2 turtle creature token
named Koopa Trooper. Place a flying counter on
one of these tokens each time.