Guilian had arrived early, torn between being here and being far away. But this knowledge that the darkness inside him was indeed eager to be unleashed, he saw this as an opportunity to use it constructively, in a controlled environment. He'd noticed Rabastan had returned, giving his mentor a nod as they insinuated themselves amongst the crowd. This time, he made sure that his death eater mask was affixed firmly under the dark hood of his robe.
The alarm went off as Rodolphus started the proceedings, the obese Muggle being exploded over the crowd. He managed a bit of a chuckle. A very important lesson in excess, indeed. As Lestrange let off the dark spells, the darkness within cried out, urging Guilian to strike so that he might feel the power of such work and be sated by the darkness.
He spotted his own Muggles - a woman (who in this early morning light) reminded him of Opal. Her dark beauty took him aback for just a moment, but the darkness saw this, reminding him of every ounce of Opal's betrayal; of what she had done to his family. Striking out, he lashed at her with his wand, slicing curses aimed at her face. A guttural scream escaped her lips, but even as he heard it, his anger at Opal reached boiling point. Raging out of control, he let the darkness get a hold for a moment, the look in his eye hard as he sliced her throat in one swift move. Her artery was severed, blood spilling everywhere as he felt the distinct rush from the darkness.
The surge of magic was intoxicating, and he knew he was having trouble keeping control of himself. The anger, and the joy was so divine. He had a death grip on his wand, which was the only thing that kept it there when he felt the spell that tried to pull at his wand.
He lashed out, casting another slicing curse in the direction of his assailant. He tried not to laugh when he saw who it was. It was the very pretty blonde auror he'd fought in the last battle. He wasn't going to underestimate her this time.