Terisiare's Devastation
Sorcery
Oracle Text
You lose X life and create X tapped Powerstone tokens. Then all creatures get -1/-1 until end of turn for each artifact you control. (The tokens are artifacts with "
: Add 
. This mana can't be spent to cast a nonartifact spell.")
Rulings (3)
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Wizards of the CoastAlthough all the cards in The Brothers’ War that create Powerstone tokens create a tapped Powerstone token, entering the battlefield tapped isn’t part of the token’s definition. Notably, if you create a token that is a copy of a Powerstone token, the token copy won’t enter the battlefield tapped.
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Wizards of the CoastPowerstone tokens are a kind of predefined token. Each one has the artifact subtype “Powerstone” and the ability “: Add . This mana can’t be spent to cast a nonartifact spell.”
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Wizards of the CoastYou can use the added by a Powerstone token on anything that isn’t a nonartifact spell. This includes paying costs to activate abilities of both artifact and nonartifact permanents, paying ward costs, and so on.