Sort:  

I just don't understand it yet. I know when to play scattershot normally, but so far - this has been difficult.

Scattershot is best played with Blast which is what you did with that win battle. That extra speed is making your monsters tough to hit, as well as going first. I underrated Speed for the longest time, but it gives you a double advantage.

I underrated Speed for the longest time, but it gives you a double advantage.

Yeah, it is hard to defend against in some battles - the scattershot limits the effectiveness of Shieldbearer a lot too - which is good, since I don't own one! :D