This artifact has a fun story attached to it, too: Originally, Skullclamp was designed to give a +1/+1 buff, but before seeing print the Magic designers thought that such a buff would make Skullclamp too powerful and they changed it to +1/-1
This can be a huge shift in advantages when you get a 4/3 dragon and a bomb card from an opponent you can cast for free
Shell miss out on haste, a cheaper mana cost, and a few black combat tricks, but youll gain access to cards such as Seize the Day to help her get extra attacks in as well as everything else that comes with the inclusion of red and blue
Avacyn remains one of the best Angel commanders MTG players rely on because global indestructibility turns fragile boards into nearly untouchable win conditions
Still, Dalek Drone is a solid roleplayer in reanimator/flier focused builds like Raffine
I personally am willing to take the risk and leave them in, as having a 20/20 Indestructible Flying creature is a potential alternate win condition