Military Dragon, Raptor Colonel

(This ability is active if you have four or more damage):[ 1 & Choose two of your Tachikaze rear-guards, and retire them] When this unit attacks a vanguard, you may pay the cost. If you do, increase this unit's by the sum of the original of the units retired as the cost until end of that battle. :If you have a card named "Military Dragon, Raptor Captain" in your soul, this unit gets +1000.