Collapsible Hound's Halberd

Description
A simple metal rod that can expand into a full-size halberd.

The weapon has a modified grip that means it can be easily wielded in the mouth of a canine. Physics can go fuck itself.

Magical
The halberd is a magical weapon, granting a +1 bonus to attack & damage rolls.

Collapsable
As a bonus action, you may use a command word to expand the metal rod into the halberd, or collapse the halberd back into the metal rod.

Melee
The halberd is weilded in two hands (or one dogs mouth), dealing (1d10 + STR + 1) slashing damage. It has a reach of 10ft.