"To Arms!" Ability for Drummer

[Badnorth]

Drummer Ability - To arms!
Effect: Change Drummer to Broad swordsman unit.

I see that Drummer unit has a sword in it's back but never uses it. I propose this for drummer to have it as a self-defence ability. When this unit changes stance it discards those drums and turns onto a Broad swordsman. Cannot switch back and loses drum aura completely. One time usage.

[Badnorth]

And when switching there should be a "shouting men" sound effect. It would be really cool