Hyanthe's Dispelling

Counter up to one target instant or sorcery spell
with converted mana cost {x} if {u} was spent to
cast Hyanthe's Dispelling. Destroy up to one
target artifact or enchantment with converted
mana cost {x} if {g} was spent to cast Hyanthe's
Dispelling. (Do both if {g}{u} was spent.)
"That isn't a good number for you."
—Hyanthe