Feather of diatryma summoning

A feather of diatryma summoning was a magic feather that temporarily transformed into a diatryma at the service of its summoner.

Description
Feathers of diatryma summoning were brightly colored plumes that were produced from feathers of diatrymas.

Powers
Upon pronouncing the feather's command word and throwing it into an empty space, it transformed into a diatryma for up to 6 hours, following its summoner's commands and helping its summoner's allies. The summoned bird could also be used as a mount. The bird could be dismissed early if killed or if the summoner pronounced the command word again, while touching it. It then reverted to feather form.

After being used, the power of a feather of diatryma summoning could be used again after 7 days.

Notable Owners
The mercenary Jarlaxle Baenre owned a feather of diatryma summoning. He wore it as an ornament to his hat.

Appearances

 * Waterdeep: Dragon Heist