Alvarus, the Glassy-Eyed

Play with the top card of your library revealed.
You may play lands from the top of your library.
You may cast chromatic spells from the top of
your library and spend mana as though it were
mana of any color to do so. (Chromatic spells have
only colored mana symbols in their mana cost.)
"Sit down weary traveler, for I am that which you
seek. I am tetrachromacy."