BARRIER POWER: Minimum range 6. Generate up to 4 blocking terrain markers, one at a time, in distinct squares within range. Other than the first, each marker must be adjacent to at least one other, and at least one must be within line of fire. At the beginning of your next turn, (even if this is lost) remove them.
Can Barrier/Blocking terrain be generated on hindering terrain markers (Smoke Cloud, Debris, etc.)?