Expanding Staff

A staff that folds into a one-foot rod. Currently in the possession of Evren Seregwen.

Stats
When expanded, functions the same as a normal quarterstaff. The user must make a DC20 strength check to contract it.

When contracted, you may spend an action to expend the staff. You may expand it against another creature; if you do so, you and the other creature must both make strength saving throws. The DC is the other person's strength score. If one person passes but the other fails, the one with the failed save takes 4d8 bludgeoning damage and is knocked 10 feet back and becomes prone. If both fail, they each take 4d8 bludgeoning damage and are knocked back 10 feet and fall prone. If both succeed, they each take 2d8 bludgeoning damage and are knocked back 5 feet.

This item may be used to attempt to break down a door, barrier, or similar obstruction. To do so, use an action to expand it against the obstruction. Make a DC13 strength save. On a success, you make an athletics check to break the object with a +10 modifier. On a fail, you are launched 20ft backwards; if this causes you to impact a solid surface, you take 4d8 bludgeoning damage. You can brace yourself to increase the bonus to +15, but you take 2d8 damage in the process, regardless of the outcome. You may choose to fail this saving throw.