Whenever you cast a permanent spell with a mana cost that contains {X}, double the value of X.Whenever you cast an instant or sorcery spell or activate an ability, if that spell's mana cost or that ability's activation cost contains {X}, copy that spell or ability. You may choose new targets for the copy.
$15.00 $9.00
$10.00 $5.00
$13.00 $5.00
$9.99 $5.99
$9.00 $5.40
$5.99 $3.59
$22.00 $13.20
$12.99 $7.79