Elite Counterspell

You attempt to interrupt a creature in the process of casting a spell. If the creature is casting a spell of 6th level or lower, its spell fails and has no effect. If it is casting a spell of 7th level or higher, make an ability check using your spellcasting ability. The DC equals 10 + the spell's level. On a success, the creature's spell fails and has no effect, then you imediatley send the spell back at the target at one lower level or if it can't go down a level at the same level.