Puddle Jumper is Donut's group teleport song, capable of moving nearby allies across a sealed zone to a chosen internal destination such as a saferoom entrance.
Carl has Donut prepare the sheet music before the party crosses the cemetery gate. Like Skedaddle, it cannot escape the magical boundary but can bypass streets and surrounding mobs within it.
When the group becomes encircled and remains one hundred meters from the saferoom, Donut orders everyone close and casts Puddle Jump. Carl, Donut, Mongo, Ines, Paz, and Anton reappear together immediately outside the Yellow Zone.
The jump breaks the horde's contact and prevents the party from being overwhelmed after Carl exhausts his holy smoke curtains.
Enchanted music opening a brief splash-like portal beneath a tightly grouped party.
Puddle Jumper provides coordinated squad-scale repositioning within a locked encounter.
Also appears in books you've already read — spoiler-safe to their endings: