Titan of the Crystal Cave

Reach, Trample, Deathtouch
This creature gains +2/+2 for each black creature
in your graveyard.
{2}: Discard a card from your library, if a creature
is discarded this way, it loses its color and
becomes a black card as long as it is in the
graveyard.
"The dark crystals of this cave are made of
midnight magic, dark and black as night."