Strikehead Dragon

(This ability is active if you have one or more face up G units in total on your or G zone):When your rear-guard attacks a vanguard, if it is the third battle of that turn or more, that unit gets +3000 until end of that battle. :[ 1 & 1] When this unit is placed on , you may pay the cost. IF you do, choose up to one card from your hand, call it to , until end of turn, that unit gets ":When this unit attacks a vanguard, if it is the first battle of that turn, this unit.".