Donut's short-range teleport, which requires line of sight to the destination.
Puddle Jump was the last step of Carl's escape plan from the mongoliensis clearing: Snitch to summon five guards, invisibility potions, a Smoke Curtain, a wall of fire, and then Princess Donut jumping them both back to Point Mongo. The plan died on its requirement — Donut could not see past the clearing, and so had nowhere to jump to.
Carl's fallback was simply to back up far enough that the town came into view, at which point she could cast it. He got within thirty feet of the treeline before Kiwi's call paralyzed him.
The party's escape hatch from the raptor clearing, blocked by a lack of line of sight.
Also appears in books you've already read — spoiler-safe to their endings: