Counterspell

Casting Time: 1 reaction
Range: 60 feet
Attempt to interrupt the casting a spell. If the
spell is 3rd level or lower, it fails and has no
effect. If it's a 4th level or higher, the DC is 10 +
the spell's level. On a success, the spell fails and
has no effect. At higher levels, the spell has no
effect if it's less then or equal to {x} the level
spell slot level used.