Needles spies their audience. She's a show-off nearly as much as Sparks can be sometimes, and she reacts by escalating the situation massively.

She leaps into the air, and Sparks barely has a moment to jump his feet before a roaring Surf from nowhere slams him back off them again.

And floods several of the plots. She missed the ones Chara's planted already...mostly due to luck than proper accuracy, but that's good enough!

In the distance, Frisk heaves themselves to their feet. It's been about five minutes, why so much trouble so fast?