Velathis, Lord of Dark Manor

Subjugation (Spells your opponents control with
a lower mana cost cannot be played immediately
after this.)
Black and white spells you control cost {1} less to
cast. Black and white spells your opponents
control cost {1} more to cast.
If a permanent you control has both {b} and {w} in its mana cost, it has protection from
black and white.