Ah, a card from back when Walls were the only creatures with Defender that still says "non-Wall". This is basically a stripped down War's Toll in essence. Yes, I know that forcing someone to attack with everything isn't exactly what this card says, but that's basically what's going to happen. It also has the downside of effecting you, but it's not that big of a deal if you're swinging every turn. I actually like this in my mono-red EDH as a grind card which allows me to set up for a win easily. It's a pretty decent card if you're looking for a way to control those pesky utility creatures too (since it forces their use before combat). In short, it's a decent red control card, especially with cards like Silent Arbiter and Crawlspace.
Pros: Controls when/where creatures attack
Cons: Effects you