Beast of Nurgle

Beast of Nurgle gets +1/+1 for each creature
card in your graveyard
{x}{b/g}, {t}, Sacrifice another creature: Search
your library for a creature card with
converted mana cost X or less, put it onto
the battlefield, then shuffle your library.
Activate this ability only any time you could cast
a sorcery.
The Beast has the personality of a playful puppy
and just loves making friends.