MCCS - new Multiplayer content

Isn't the special ability for general invisibility a bit too strong? People used to complain that the existing invisibility spells lasted too long and so on... But overall, it's cool.

I think the counter is simple: a Chaos player knows where to cast mass spells, and in the final stage, you can just memorize the locations and attack when needed... However, the special ability is indeed a bit overpowered against creatures, but this is multiplayer content after all.