Master of Waves
Creature — Merfolk Wizard
Oracle Text
Protection from red Elemental creatures you control get +1/+1. When this creature enters, create a number of 1/0 blue Elemental creature tokens equal to your devotion to blue. (Each
in the mana costs of permanents you control counts toward your devotion to blue.)
Rules for this card
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A keyword ability that provides a range of benefits against objects with a specific quality. See rule 702.16, “Protection.”
Rulings (7)
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Wizards of the CoastBarring other effects, the Elemental tokens will enter the battlefield as 2/1 creatures.
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Wizards of the CoastIf Master of Waves leaves the battlefield, and nothing else is raising the toughness of the Elemental tokens above 0, the Elemental tokens will die and subsequently cease to exist.
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Wizards of the CoastNumeric mana symbols (
, 
, and so on) in mana costs of permanents you control don't count toward your devotion to any color.
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Wizards of the CoastHybrid mana symbols, monocolored hybrid mana symbols, and Phyrexian mana symbols do count toward your devotion to their color(s).
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Wizards of the CoastUse your devotion to blue as the triggered ability resolves to determine how many tokens are put onto the battlefield. If Master of Waves is still on the battlefield at that time, its mana cost will count toward your devotion to blue.
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Wizards of the CoastMana symbols in the text boxes of permanents you control don't count toward your devotion to any color.
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Wizards of the CoastIf 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.