thalos, god of decay

indestructable
as long as your devotion to black and green is less
than seven, thalos is not a creature
if there is a {g} in a mana cost of a spell you
control, you may pay for it as if it were a {p/g}
if there is a {b} in a mana cost of a spell you
control, you may pay for it as if it were a {p/b}