A character, usually the hero or at least one of the good guys, has a loyal animal companion, sometimes a mount. Using some type of sound, usually a whistle or some type of musical instrument, the hero can summon the animal, which dramatically rushes to their side. Confusion may set in when the viewer realizes the animal may have appeared from anywhere just as quickly as if they were just out of sight, regardless of actual distance or obstacles.
Five hats means that five tropers think it is ready to publish.
You are saying that you think this draft is ready to be published. That means the description is not ambiguous,
it doesn't duplicate an existing trope, there are at least three examples, and the title makes sense.