Shield block needs to cost 2 instead of 3. It should be used as a clutch spell to help save my skin because I have been attacking minions with my weapon. It wouldn't be more OP at a 2 mana cost, but would fit a better niche of a situational spell that is a "trick" up your sleeve.
At 3 mana, it is too clunky.
I think this change would be a quality of life improvement without making it OP.
What do you guys think?