The Roulette Blade

Whenever you roll for initiative roll a d20 for the blade, it takes the form of one of the following for the next 1 minute after which you must rerolll the die.

1-4. Dagger (1d4)
5-10. Short sword (1d6)
11-15. Rapier (1d8)
16-18. Glaive (1d10)
19-20. Scythe (1d12)

No matter the roll the weapon is considered light and has the one handed property.