villain of the story
Arcane
He said there was a radius around his own units that he could place them, in this example that radius happened to be the entire battlefield.Make it so barricades require multiple turns to construct in the battlefield. The better the barricade the more turns it needs.
Then again, there are the spike traps. You build them right in front of the enemy and the enemy walks into them.
How does that relate to traps being set in enemy's LOS and the said enemies walking into the traps?