The rent flexes and throbs, pulling at space around it. You glance around frantically but don't see anyone channeling a summoning pattern. You don't even see a trail of green pattern energy leading to the growing dimensional rip. Where is this coming from?
You get to the end of your pattern cards. You don't have anything to stop the summoning. The best you could do is put a bubble of force around it to contain whatever is being summoned, in case it's dangerous.
"I can stop it!" Alex says frantically. "This is my specialty! Let me have your body!"