Soul Relic?

Warden controlled his landing as the shroud sucked in all dispersing energy from the lightning. June's spell demanded that he use both [Void Shroud] and [Mystic Ward] simultaneously, as it was that destructive. Still, the 10% return on energy absorbed was enough to surge his channels with more power.

If this attack were to be measured, it would easily get an [A-] rank, and she was merely beginning. Was she really holding back her power? If so, how much?

Warden didn't have time to muse on all those questions as June sent a barrage of lightning spells at him. This time more lightning dispersed than in a single serpentine form. Warden's legs moved as he Willed to parry her attack away.

Warden moved fast, pushing his apertures to the limit. Lightning hammered into his shroud of void energy, biting into the ethereal obstruction from all sides. It was under the highest amount of stress Warden had ever experienced, but it would hold until his energy ran dry.