Carlos swore to himself as his fireball went wide - damn, that thing was fast - but he took a quick swing of his staff as the skull came close. No more than a glancing blow, but he'd take it.

He glanced over at the woman - Clarice, he seemed to recall, though he didn't actually know her, before turning his attention back to the skull. "Impermeable barrier? Not exactly a specialty, but give me a moment to prepare it, and I can do it. Got an idea?" He tended to work with laws of thermodynamics - namely that the energy was absorbed by the barrier, and whatever was going through the barrier was slowed down. Extending it so that it effectively slowed it to a stop would be challenging - but he could do it.