Casting Time: 1 action
Range: 30 feet
Components: V, S, M (a gem worth at least 500 gp)
Duration: Concentration, up to 1 minute
You create a well that traps mystical energy at a space you can see within range. Whenever a spell is cast or a power is manifested within 60 feet of the well, you can use your reaction to trap the energy, negating the spell or power, provided it is a spell using a slot of 5th level or lower or a power augmented by 10 or fewer power points.
The well has 20 charges; each spell it negates consumes 2 charges per slot level and each power it negates consumes 1 charge per power point spent to augment it. Once the well has no charges remaining, the spell ends. A spell or power can’t be partially negated.
At Higher Levels. When you cast this spell using a spell slot of 8th level or higher, the number of charges the well has increases by 10 for each slot level above 7th.