They are all bound to her will

Energy surged from Sarah's body, knocking the six women surrounding her to the ground. As they tried to stand, they found that none of them could go any higher than kneeling.

"What was that?"

"Why can't I get up?"

"I think there's something wrong with my legs!"

Sarah wasn't listening to them, she was looking at the card in her hand. There was a faint glowing line connecting it to her, and six more lines spreading from it to the other cards, and from them to the friends of hers who chose them. The only one who was holding hers, other than her, was Mackenzie, who was looking down at it, or would be if not for her blindfold, and grinning. As Sarah looked, she wondered what she was thinking about, and a small pulse of her energy flowed into her card and down the path to Mackenzie's, and from there into her.

"This is so cool, right?" She heard Mackenzie's voice in her mind, and tried to reply the same way.

"What's so cool?"

"Sarah, we're using telepathy, how could that not be incredible?" Sarah had to admit she had a point.

"But do you know what's going on?"

"Yeah, you did some magic thing and now we're all connected. I think we're like your familiars, or servants or something."

"Magic's not real." she said automatically, only to get the mental equivalent of an eye roll. "Okay, I guess magic is real, but why do I... oh, my aunt, right." It suddenly hit her that Mackenzie had said they were her servants now. "Sorry!"

"About what?"

"About this weird connection thing!"

"Why apologize? This is the best thing that's ever happened to me! My best friend is a witch, and I'm kind of magic now too!" Sarah was appalled. She knew that Mackenzie loved the idea of magic, but she had given up so much just now, she seemed to think that Sarah could order her around, and Sarah didn't think she was wrong. Sarah's eyes fell on Rebecca, and the others who had helped her teasing. She couldn't help but want to get ****, and as she thought that, she saw a small bead of energy start to slide down from her card. She stopped it, and slowly managed to pull it back. She couldn't do that, could she? Rebecca still didn't even know what was going on, and- "You can do whatever you want to, Sarah." Mackenzie said, clearly sensing her urge. "I can help, if you like." Sarah could feel Mackenzie's honest desire to please her, and that she wanted to stay with her as the most important of their group. Of course, Mackenzie would want to be as close to the magic as possible. Of course, it wasn't much magic at the moment, flowing through the thin threads. She might be able to expand them with a little ****, but with the way they were connected through the cards, that could have some side effects.