Catoblepa dal Soffio Avvizzente
Creatura — Bestia
3 / 2
Quando il Catoblepa dal Soffio Avvizzente entra nel campo di battaglia, una creatura bersaglio controllata da un avversario prende -X/-X fino alla fine del turno, dove X è pari alla tua devozione al nero. (La tua devozione al nero è la somma dei

nel costo di mana dei permanenti che controlli.)
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
Mana symbols in the text boxes of permanents you control don’t count toward your devotion to any color.
If you put an Aura on an opponent’s permanent, you still control the Aura, and mana symbols in its mana cost count towards your devotion.
The value of X is determined only as the triggered ability resolves. Once that happens, the value of X won’t change later in the turn even if your devotion to black changes.
If an activated ability or triggered ability has an effect that depends on your devotion to a color, you count the number of mana symbols of that color among the mana costs of permanents you control as the ability resolves. The permanent with that ability will be counted if it’s still on the battlefield at that time.