Give this character a power action. This character may create up to 4 squares of blocking terrain anywhere within its range(min of 4). Place up to four barrier terrain markers on the battlefield. Each barrier terrain marker must be adjacent to another barrier terrain marker created by this character.At least one of the terrain markers must be within line of fire when it is placed. These terrain markers remain in place until the beginning of your next turn or until the power is countered or lost.