Arianna had stopped when Carmen gestured, peering out and watching the cultists, nerves on fire with anxiety and eagerness, though she waited for Carmen's signal to do anything.  As soon as Lady Omega appeared, she smiled.  "Guessing that's our cue," she said as she held out her left arm and focused.  A few sparkling motes of light appeared in front of her, quickly coalescing into a shining shield, the hilt of a sword sticking out over the top.  As soon as it was formed, she rushed forward, drawing the sword as she charged.