Blue Storm Soldier, Rascal Sweeper

:When this unit attacks, if you have a vanguard with "Maelstrom" in its card name, this unit gets +2000 until end of that battle. :At the end of the battle that this unit attacked a vanguard, if you have a vanguard with "Maelstrom" in its card name, and if it is the first battle of that turn, choose one of your other rear-guards in the same column as this unit, and exchange positions with this unit. (The state of the card does not change)