[quote=@KoL]

Anyway, I just got a thing to clarify about Nova's shield. He can't use it to become theoretically immune to damage forever, right? If you could describe how you think it can work it would be great.
[/quote]

The shield blocks incoming damage for one round, damage over time and damage he took before he uses the shield will still be taken. Although it says it blocks all damage, it has a threshold of damage it can take before it breaks. That is to say, attacks above a certain threshold of damage will break the shield, but it'll block other attacks of less than than that damage.

The weaknesses of it is that he can't attack while using the shield unless he wants to cancel it, he also can't use blueshift while using the shield and things like vehicle attacks will break it fairly easily. But he can use it to run at full running speed, so he uses it to get into a fight or wait out blue shift's cooldown so he can reposition himself. It also has a cast time and a small area so you can sneak in there and cuddle him or something if you're fast enough.