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Sphinx's Decree [Rivals of Ixalan Prerelease Promos]
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Original price
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| Set: | Rivals of Ixalan Prerelease Promos |
| Type: | Sorcery |
| Rarity: | Rare |
| Cost: | {1}{W} |
Each opponent can't cast instant or sorcery spells during that player's next turn.
"Be still."
—Azor