Diva of Blue Indigo, Ceratouchia DZ-BT17/020 RRR

[AUTO]:When this unit is placed on (RC) from hand other than during the battle phase, COST [Counter Blast (1)], draw a card, choose a card from your hand, reveal it, call it to (RC) if it is grade less than or equal to your vanguard, and discard it if it is not. If your vanguard's grade is less than or equal to your opponent's vanguard's grade, until end of your opponent's next turn, this unit gets [Shield]+5000. If your vanguard's grade is less than or equal to your opponent's vanguard's grade, this cost can be paid with "Energy Blast (3)". [AUTO](RC):When this unit attacks a grade 3 or greater unit, if two or more of your rear-guards were placed this turn, this unit gets [Power]+10000 until end of that battle.