Empyrean Blue Dragon, Shelling Cannon Dragon

[AUTO]Back Row Center (RC):At the beginning of your battle phase, if your vanguard is "Flagship Dragon, Flagburg Dragon", and your opponent's vanguard is grade 3 or greater, [COST][Counter-Blast 1], and until end of turn, this unit can attack from the back row, and gets [Power] +10000. [CONT]Back Row Center (RC):If you would move or swap this unit during your main phase, you can also move it within the same row.