Disciple of Phenax
Creature — Human Cleric
When this creature enters, target player reveals a number of cards from their hand equal to your devotion to black. You choose one of them. That player discards that card. (Each in the mana costs of permanents you control counts toward your devotion to black.)
John Severin Brassell
Theros (THS)
• #84Rulings
Numeric mana symbols ({0}, {1}, and so on) in mana costs of permanents you control don't count toward your devotion to any color.
(wotc • 2013-09-15)
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
(wotc • 2013-09-15)
Use your devotion to black as the triggered ability resolves to determine how many cards will be revealed. If Disciple of Phenax is still on the battlefield at that time, its mana cost will count toward your devotion to black.
(wotc • 2013-09-15)
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.
(wotc • 2013-09-15)
Mana symbols in the text boxes of permanents you control don't count toward your devotion to any color.
(wotc • 2013-09-15)
Rulings
Numeric mana symbols ({0}, {1}, and so on) in mana costs of permanents you control don't count toward your devotion to any color.
(wotc • 2013-09-15)
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
(wotc • 2013-09-15)
Use your devotion to black as the triggered ability resolves to determine how many cards will be revealed. If Disciple of Phenax is still on the battlefield at that time, its mana cost will count toward your devotion to black.
(wotc • 2013-09-15)
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.
(wotc • 2013-09-15)
Mana symbols in the text boxes of permanents you control don't count toward your devotion to any color.
(wotc • 2013-09-15)