The Ruinous Powers
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At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value.
Official rulings
- Use the mana value of the spell as it exists on the stack (or last existed on the stack, if it's been removed) to determine how much life is lost. If there is an {X} in that spell's cost, include the value chosen for X to determine its mana value. (2022-10-07)
- You must follow all normal timing rules when casting a spell or playing a land using the permission granted by Ruinous Powers. (2022-10-07)
Printings & prices
Every set The Ruinous Powers has been printed in, with the art, the finishes and the market price of each — the headline price above is the cheapest of these.
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