Blue Storm Karma Dragon, Maelstrom "Яeverse"

(This ability is active if you have four or more damage):[ 1 & Choose one of your rear-guards, it, and lock it] When this unit attacks a vanguard, if it is the fourth battle of that turn or more, you may pay the cost. If you do, until end of that battle, this unit gets +5000/ +1, and ": At the end of the battle that this unit attacked, if the attack did not hit during that battle, draw a card, choose one of your opponent's rear-guards, and retire it.". (The locked card is turned face down, and cannot do anything. It turns face up at end of the owner's turn.) :If you have a card named "Blue Storm Dragon, Maelstrom" in your soul, this unit gets +2000. /:Lord (If you have a unit without a same clan as this unit, this unit cannot attack )