Xur, Enchanter of the Nine

{p/b} add {b}, and swampwalk until end of turn,
{p/w} add {w}, and plainswalk until end of turn,
{p/u} add {u}, and islandwalk until end of turn,
{p/r} add {r}, and mountainwalk until end of turn,
{p/g} add {g}, and forestwalk until end of turn,
power of this commander is equal to
however much it was cast for, in addition
to how many enchantments are on the field.