Creature â Human Cleric
As Sanctum Prelate enters the battlefield, choose a number.
Noncreature spells with converted mana cost equal to the chosen number can't be cast.
For spells with in their mana costs, use the value chosen for X to determine if the spellâ€™s converted mana cost is the chosen number. For example, if the chosen number is 4, a noncreature spell with mana cost couldnâ€™t be cast with X equal to 2, but it could be cast with X equal to any other number.
Effects that increase or reduce the cost to cast a spell donâ€™t affect that spellâ€™s converted mana cost.