Whistle of CallingEquipment 15
Source Pathfinder Lost Omens: Knights of Lastwall
Price 6,300 gp
Weight negligible
A whistle of calling appears to be a simple brass whistle. It changes slightly in appearance depending on the type of creature to which it's attuned, depicting small carvings of hooves, feather patterns, claws, or other appropriate motifs.
Activate 10 minutes (Interact)
Effect You blow the whistle at different tones in the presence of a companion or another allied creature willing to be your mount. At the end of the 10 minutes, the whistle is attuned to that creature. The whistle can be attuned to only one creature at any time, but you can attune it to a new one with another 10-minute activation.
Activate 
Interact
Frequency once per day
Effect You blow the whistle and the creature to which it is attuned teleports instantly from as far as 1 mile away to an unoccupied space within 30 feet of you. The whistle has no effect if the attuned creature is dead, on another plane, or outside the range.
Traits
Something of uncommon rarity requires special training or comes from a particular culture or part of the world. Some character choices give access to uncommon options, and the GM can choose to allow access for anyone. Less is known about uncommon creatures than common creatures. They typically can't be summoned. The DC of Recall Knowledge checks related to these creature is increased by 2.
ConjurationEffects and magic items with this trait are associated with the conjuration school of magic, typically involving summoning, creation, teleportation, or moving things from place to place.
MagicalSomething with the magical trait is imbued with magical energies not tied to a specific tradition of magic. A magical item radiates a magic aura infused with its dominant school of magic. Some items or effects are closely tied to a particular tradition of magic. In these cases, the item has the arcane, divine, occult, or primal trait instead of the magical trait. Any of these traits indicate that the item is magical.