Binary Star Twin Gunner

(This ability is active if you have four or more damage):[ 2 & 2] Choose a rear-guard from your opponent's front row and back row, and lock them. (The locked card is turned face down, and cannot do anything. It turns face up at end of the owner's turn.):[Choose one of your Link Joker rear-guards, and put it into your soul] When this unit attacks a vanguard, you may pay the cost. If you do, this unit gets +5000 until end of that battle. /:Lord (If you have a unit without a same clan as this unit, this unit cannot attack)