Sam grinned and nodded when Luna asked if she was going first, before preparing himself. He was more than a little nervous, he hadn't tried this spell before. She gave him plenty of warning, thankfully, and he was pleased when she finally sent the spell. "Protigo," he said uncertainly, before being hit by the spell and being dazed, having to lean against the wall, before bursting out laughing. "Good one," he told her, "And i think you're thinking of Gregory, i've not heard Grigori used as a given name before," he told her, "Nevertheless, thank you. Please, do tell me what this "Long name" is?" He asked, grinning, before overhearing the conversation between Ezra and Andrew, and feeling the hairs on the back of his neck stand up, turning in time to see Andrew shoot a spell at him.
"Protego," he cast, successfully blocking the spell this time. "Hey, awesome," he said, clearly pleased with himself. "Well, i suppose we can work together now," he said with yet another smile at Luna. "Stupefy," he then cast, one flying directly at Andrew, before he pivoted on his right foot to face Ezra, "Stupefy," he cast again, hoping to catch the boy unawares.
((And once again i've forgetten you Ezra is, i get the feeling it's Bri?))