Ruco, the Titans' Mark

Emerge {7}{u/b}{u/b} (You may cast this spell by sacrificing a creature and paying the emerge cost
reduced by that creature's converted mana cost.)
When you cast Ruco, the Titans' Mark,
Distribute X -1/-1 counters among creatures
your opponents control where X is equal to the
converted mana cost of the sacrificed creature
for this creature's emerge cost.
Trample