Limit Break 4 (This ability is active if you have four or more damage): When an «Aqua Force» rides this unit, you may pay the cost. If you do, choose your vanguard, and until end of turn, that unit gets +10000, and ":When this unit attacks a vanguard, if it is the fourth battle of that turn or more, draw two cards, choose one of your opponent's rear-guards, and retire it.".
:When this unit attacks a vanguard, this unit gets +2000 until end of that battle.