Lara probably dies horribly before she even gets around to swinging Excalibur. Sephiroth is likely clipping the fences when he tries to swing, actually, which might mess him over a little. But hell, Omnis is taking up a lot of space here and drawing a lot of attention, and he can tank some blows thanks to physical damage reduction. Team Omnis, mainly due to the other side having three squishes who immediately get killed in the mayhem
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We are thought, and reality, and concept, and the unimaginable