Jefe supremo aberrante

Text:

Vuela.
Cuando el Jefe supremo aberrante entre al campo de batalla, pon en el campo de batalla una cantidad de fichas de criatura Arpía negras 1/1 con la habilidad de volar igual a tu devoción al negro. (Cada en los costes de maná de los permanentes que controlas cuenta para tu devoción al negro.)
Al comienzo de tu mantenimiento, sacrifica una criatura.

Rulings:

• 9/15/2013 Numeric mana symbols (<img src="/Handlers/Image.ashx?size=small&amp;name=0&amp;type=symbol" alt="0" align="absbottom" />, <img src="/Handlers/Image.ashx?size=small&amp;name=1&amp;type=symbol" alt="1" align="absbottom" />, and so on) in mana costs of permanents you control don’t count toward your devotion to any color.
• 9/15/2013 Mana symbols in the text boxes of permanents you control don’t count toward your devotion to any color.
• 9/15/2013 Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
• 9/15/2013 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.