Sith Wyrm

Rampage
Traverse (This card cannot be defended against if
you have untapped Black Biome cards.)
Consume {b}{b} (In addition to cost, sacrifice a Being
or Creature on your field. Place +1/+1 counters onto
this card equal to the sacrificed card's defense value.)
"A legendary monster created by Naga Sadow, worshipped by the ancient Massassi."