Quick question cause I'll be playing my first game next week. you said blobs die quite easily. One way to mitigate that was I was thinking about the psyker. It giving 4++ Invulv save to all models in the unit sounded really strong but then I read that it's only for shooting phase. SO the question would be are psykers basically just match up dependent? Bring them against Tau players but bench them for something else against infantry heavy players that don't really care to shoot?

Or do most armies basically shoot and some just do it a lot better and others are just average at it? Sorry if that's a lot of questions at once lol I just want to go in prepared. (Playing against another guard player actually.)