Counterspell

Casting Time: 1 reaction, when you see a creature
within 60 feet of you casting a spell - Range: 60 feet -
Components: S - Duration: Instantaneous
If the spell is of 3rd level or lower, it fails. If it is
4th level or higher, make an ability check using
your spellcasting ability. DC equals 10 + the spell
level. On a success, the spell fails. When you cast
this spell using a spell slot of 4th level or higher,
the interrupted spell has no effect if its level is less
than or equal to th