Brass Clockwork Staff
Wondrous item, rare (requires attunement)
This curved staff seems to be made of coiled brass and glass wire. You can cast the staff onto the ground and transform it into one of three wireframe creatures of your choice: a unicorn, a clockwork hound, or a clockwork beetle swarm. If any of the wireframe creatures is reduced to 0 hit points, it reverts to staff form, and the staff is inert and unusable until the third dawn after the creature was damaged. If partially damaged but not reduced to 0 hit points, the construct creature has full hit points when summoned again.
You can ride the unicorn as a normal mount for up to 1 hour before it reverts to staff form (use the statistics for the rhinoceros, including the charge and gore abilities). You can direct the hound to track or attack any creature initially within your line of sight, and it returns to staff shape after 5 minutes (use the statistics for the cave bear, including darkvision and keen smell abilities, but not the multiattack or claws actions). You can direct the beetle swarm to attack any creature initially within your line of sight or destroy any mundane object not made of stone or metal and weighing less than 10 pounds (1 pound/round), but it returns to staff shape after 1 minute regardless (use the statistics for the swarm of quippers, but replace the 40 foot swim speed with a 40 foot fly speed). Once you have used the staff to create a wireframe creature, it can’t be used again until the next dawn.