Invisibility is so overpowered it's laughable. I'm really hoping the community use it with discretion outside of competitive games because some of its uses seem game breaking. If people are put off by its use in tournaments perhaps a simple fix would be changing it to a WC2 version of the shrouding spell, but with a 24" range that applies to one friendly unit. Still a good spell to roll but not an instant win
Until that time (which will likely never come) I guess in any competitive game I'd be hoping to roll invis for my sorceror and try to cast it on Skarbrand when he deepstrikes. So overpowered, what were the writers thinking?