Morophon, The Ultimus

Changeling (This creature is every creature type.)
As Morophon enters the battlefield, choose
a creature type.
Spells of the chosen type you cast cost
{2}{w}{w}{u}{u}{b}{b}{r}{r}{g}{g} less to cast.
When Morophon enters the battlefield, draw
a card for each creature you control of
the chosen type.