Covert Demonic Dragon, Magatsu Typhoon (G-BT03/S10EN) [Sovereign Star Dragon]

[ACT](VC): Legion21000 "Covert Demonic Dragon, Magatsu Storm" (If your opponent's vanguard is grade 3 or greater, this unit may return four cards from your drop zone into your deck once, search your deck for the specified card, and Legion) [AUTO](VC):When this unit Legion, choose up to five of your rear-guards with "Magatsu" in its card name, and they get [Power]+5000 and "Boost" until end of turn. [ACT](VC)[1/Turn]:[Choose a card from your hand, and discard it] Search your deck for up to one card with the same name as a unit on your (VC), call it (RC), shuffle your deck, and at the end of that turn, return the unit called with this effect to your hand.