Remillia feels something wrong. Something is affecting her realm! She quickly gets up, stumbling a little. She knew that if she put too much magical pressure on herself that she would start to get magically tainted, but she couldn't let something or someone use her realm for their own purposes. In a hurry she closes her eyes and tries to gather magic as quickly as possible, and after a few moments she draws a circle around the portal with her index finger, magic bursting out of her hand, creating a magical barrier around the portal. Physical beings could pass through the barrier, but magic wouldn't. She had just created an anti magic field around her portal, keeping whatever magic was trying to drag portions of her realm away out. How were they using so much magic at one point? The Guardians weren't THAT powerful, and if whatever thing tried to use magic again he would probably use up too much magic... and that would be bad for that person...
Speaking of using too much magic, she was feeling extremely dizzy. She convinced herself that the magical barrier would keep her realm safe from further corruption, but the damage was done. She collapsed onto the ground with a grunt, falling a little through it in the process, but her spiritual body automatically righted itself. Her head swam, and she tried hard to just keep herself from completely fainting. Creating the portal was essentially cutting through multiple dimensions, and took a huge amount of effort for any Guardian. She had almost completely drained herself of energy, and her image flickered frantically. Trying with all her might, she kept herself awake, with her vision blurry, her head throbbing, and her hearing muffled.