Papyrus is using blue magic, but between the fluctuating power coming from Ignatius, and the at-least doubled weight from all the metal, it's more of a struggle to use than before. Once he and Carly have latched hands, he pushes his personal gravity upwards, above the arcs of most of the still falling debris.

"Are you flying okay?!" he hollers over the noise, now that they both know the other's not falling. "If you're not flying okay, let me down! I can fall safely, and..!"

At which point he'd be on the ground, faced with a lot of things to keep dodging, which isn't ideal. He's not as used to dodging as he should be, for the kinds of danger they get in now. After a near-year of recurring dangers, occasional training with people like Lambert, noticing the differences in how his brother fights, he's practiced enough to be capable of it, but it's never his first instinct.

...Or maybe, he could try summoning a blaster, and hold on it to reduce the weight Carly's helping with and attack from a place of reduced risk. Holding it active would be a strain, but it's worth trying. He does his best to balance the two active effects, reaches up with his spare hand to grab the forming blaster, and instructs it to fire at the Mother of Invention's face.