Counterspell (spell)

5-point abjuration
Casting time:	1 reaction
Range:	60 feet
Components:	S
Duration:	Instantaneous

You attempt to interrupt a creature in the process of casting a spell. If the creature is casting of 5-points or fewer, its spell fails and has no effect. If it is casting a spell of 6-points or more, make an ability check using your spellcasting ability. The DC equals 8 + the spell's magic point cost. On a success, the creature's spell fails and has no effect.
     Upcast. You can upcast this spell by expending extra magic points when you cast it.  When you cast this spell using 6 or more magic points, the interrupted spell has no effect if its points are equal to or fewer than the amount you used.