Callaphe, Beloved of the Sea — ruling 1

Mana symbols in the text boxes of permanents you control don’t count toward your devotion to any color.

Callaphe, Beloved of the Sea — ruling 2

The ability that defines Callaphe’s power works in all zones, not just the battlefield.

Callaphe, Beloved of the Sea — ruling 3

Callaphe’s last ability applies to itself as well as other creatures and enchantments you control.

Callaphe, Beloved of the Sea — ruling 4

Callaphe’s last ability gives only one instance of the ability to creatures you control that are also enchantments.

Callaphe, Beloved of the Sea — ruling 5

An opponent’s spell that targets a single creature or enchantment you control more than once costs only {1} more to cast. An opponent’s spell that targets multiple creatures and/or enchantments you control costs {1} more for each of them.

Callaphe, Beloved of the Sea — ruling 6

Colorless and generic mana symbols ({C}, {0}, {1}, {2}, {X}, and so on) in mana costs of permanents you control don’t count toward your devotion to any color.

Callaphe, Beloved of the Sea — ruling 7

Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).

Callaphe, Beloved of the Sea — ruling 8

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.

Callaphe, Beloved of the Sea : règles, fonctionnement et interactions (MTG)

Callaphe, Beloved of the Sea is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Callaphe's power is equal to your devotion to blue. (Each in the mana costs of permanents you control counts toward your devotion to blue.) Creatures and enchantments you control have "Spells your opponents cast that target this permanent cost more to cast."

How it works : Callaphe, Beloved of the Sea

Original English text — Wizards of the Coast / Scryfall

#1January 24, 2020· Wizards of the Coast
Mana symbols in the text boxes of permanents you control don’t count toward your devotion to any color.
No other card is named in this ruling.
#2January 24, 2020· Wizards of the Coast
The ability that defines Callaphe’s power works in all zones, not just the battlefield.
No other card is named in this ruling.
#3January 24, 2020· Wizards of the Coast
Callaphe’s last ability applies to itself as well as other creatures and enchantments you control.
No other card is named in this ruling.
#4January 24, 2020· Wizards of the Coast
Callaphe’s last ability gives only one instance of the ability to creatures you control that are also enchantments.
No other card is named in this ruling.
#5January 24, 2020· Wizards of the Coast
An opponent’s spell that targets a single creature or enchantment you control more than once costs only more to cast. An opponent’s spell that targets multiple creatures and/or enchantments you control costs more for each of them.
No other card is named in this ruling.
#6January 24, 2020· Wizards of the Coast
Colorless and generic mana symbols (, , , , , and so on) in mana costs of permanents you control don’t count toward your devotion to any color.
No other card is named in this ruling.
#7January 24, 2020· Wizards of the Coast
Hybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
No other card is named in this ruling.
#8January 24, 2020· Wizards of the Coast
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.
No other card is named in this ruling.
#9January 24, 2020· Wizards of the Coast
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.
No other card is named in this ruling.