Goblins VIII: This Thread Contains An Unexpected Variable

[Yuki Akuma]

I'd probably just make it a simple percentile for every missed attack, apeing the concealment rules. Want it to be hit? 20% to miss entirely, 80% to hit the shield. Want to avoid it being hit? 20% to hit the shield anyways. 80% to miss. Don't care? 50% either way.

And once again we discover that Thunt isn't really that great at homebrew.