Mark of the Shrike

Bestowed upon those with the Shrikes gifts, this particular mark allows for the manipulation of one's armament. The holder of the mark may concentrate on their pact weapon at the beginning of the day, choosing its form to become any other weapon they are proficient with. The weapon formed in this way reforms in one round if damaged and takes on the full statistics of the chosen armament.

At level 8 the switch can be done as an action.also the pact weapon crits on a 19-20

At level 12 the switch can be done as a bonus action. And the weapon formed in this way does an extra 1d12 necrotic damage.