Covert Demonic Dragon, Magatsu Storm "„`everse" D-VS04/SP04 SP

[AUTO]:When this unit is placed on (RC) by the ability of your vanguard with "Magatsu" in its card name, lock all of your rear-guards without "Magatsu" in their card names, and all of your units get [Power]+5000 until end of turn. Then, if your opponent's vanguard is grade 3 or greater, COST [Counter Blast (1) & discard two cards from your hand], and until end of turn, this unit will perform drive checks for the battle it attacked. [AUTO]:When this unit is retired from (RC) during your opponent's turn, COST [Soul Blast (1)], put this card into your hand, your opponent chooses a card from their hand, and discards it.