Laurophon, the Faustless

Changeling (This card is every creature type.)
As Laurophon, the Faustless enters the battlefield, choose a creature type.
Spells of the chosen type you cast cost {w}{u}{b}{r}{g} less to cast. This effect reduces only the
amount of colored mana you pay.
Other creatures you control of the chosen type
get +1/+1.