Wanda followed more slowly, rising into the air and squinting into the last rays of the setting sun as she tried to get herself under control and focus on the task at hand. At least she hadn't actually expected anything from Tony, so she couldn't be disappointed now. She flew towards the pyramid and tried to ignore the strange feeling twisting in the pit of her stomach. She'd chalked it up to being so riled up but it wasn't quite that, it was a familiar unease and it had been with her since they'd arrived. By the time she identified it, it was too late. Her bubble hit something abruptly, another energy around the pyramid, and it cancelled hers out. A shock jarred deep into her bones and knocked the breath right out of her as she fell several feet and fought to regain her equilibrium.
"What," she gasped and propelled herself backwards through the air then made a rough landing on her feet in the sand. That hadn't been painful exactly, but it was unsettling and uncomfortable. Wrong, somehow. What she felt now was the same energy that made her skin crawl back in the Brooklyn flat whenever the machine was fired up. Wanda had thought it was the portal itself but that was probably not the case; this agitation had been with her since they'd come through, like a hum just beyond her range of hearing, an invisible friction that prickled along her arms. What she'd hit was a barrier of similar power but not quite the same, a little off, but it was all magic, she realized that now.
Tony- Iron Man- passed through apparently unscathed so perhaps it was an energy that he couldn't detect or it only reacted to the direct magical energy manifested by her shield. Wanda approached the edge of the ethereal barricade with caution and, though it didn't stop her short this time, with her own protection down she did feel it, heavy and static. That apprehension she'd felt from the portal was stronger once she'd passed through the curtain of energy. The hum of power she couldn't quite hear was constant now, low in her head and thrumming through her veins. There was something mystical inside this place, something frighteningly powerful, and if she could sense it and Tony couldn't that explained a lot about why Fury had given her the machine to babysit in the first place. God dammit, Nick.
The force of the magical defense behind her diminished the closer she got to the pyramid but that wasn't much comfort with the other thing digging its way around inside her, clamoring to make its power known, stronger than hers and wanting control. With an effort she got her barrier back up (a relief that it would still work at all) and joined Tony as a doorway appeared in the wall of the pyramid.