Sanctum Prelate
Creature — Human Cleric
As this creature enters, choose a number.
Noncreature spells with mana value equal to the chosen number can't be cast.
*Whispered Memories*, by Johannes Voss
2/2
イラスト：
Secret Lair Drop#278神話レア英語適正
裁定
2016年8月23日
Effects that increase or reduce the cost to cast a spell don’t affect that spell’s mana value.
2016年8月23日
For spells with 
in their mana costs, use the value chosen for X to determine if the spell’s mana value is the chosen number. For example, if the chosen number is 4, a noncreature spell with mana cost 
couldn’t be cast with X equal to 2, but it could be cast with X equal to any other number.