Patchouli, Unmoving Library

Defender, protection from instants and sorceries
When you cast Patchouli, Unmoving Library,
check-out X where X is the number of colors of
mana spent to cast Patchouli, Unmoving Library.
{b/r}{g/w}{u},{t}: Check-out 1. Patchouli, Unmoving
Library deals damage to any target equal to the
number of books you control.
Witching hour: If an ability would cause you to mill,
you may place that many cards from your
graveyard on the top of your library in any order instead.