[quote=@NeutralNexus]
You're speaking like Umbraxis is just going to be dealt with by one person.  When it finally reveals itself as something more than a slaughtering shadow-monster, its going to take more than one guy to fight back.

[b]*Cough cough*[/b] Pseudo-Avengers Assemble [b]*cough*[/b]
[/quote]

I didn't mean to suggest that any one hero can best Umbraxis. But assuming Eva did team up with the other good heroes. Excalibur wouldn't do all that much. Though I have been thinking about defining just how much damage Excalibur can take. If I were to compare Excalibur to something it'd be closer to Captains' Shield in durability. However heroes like Hulk or for someone in IC. Icon can destroy Excalibur. Basically anyone World class or higher can destroy Excalibur. That applies to World class Magic or higher. Though anything less than Cosmic level heroes or magic will still struggle to break Excalibur. 

I also thought about giving Excalibur some damage against magic constructs. Or creatures. Because it is a magic weapon.