If a card in your hand has {X} in its mana cost, X is considered to be 0.
07-12-2018
wotc
If a spell has {X} in its mana cost, include the value chosen for that X when determining the mana value of that spell, even if it was cast for an alternative cost and no mana was spent on X.
01-02-2005
wotc
Disrupting Shoal can target any spell, but does nothing unless that spell's mana value is X.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.
Scott M. Fischer2018-12-07
