Demonic Jewel Dragon Emperor, Drajeweled Magnus

:At the beginning of your ride phase, choose two cards from your drop, and put them into soul. :At the beginning of your battle phase, if your soul has a card with "Drajeweled" in its card name, all of your front row units get +5000 until end of turn. :When this unit attacks a vanguard, [ 4 cards with different grades], choose one of your opponent's vanguard, until end of turn, its becomes 0, and if your opponent's vanguard is grade 3 or greater, this unit gets +1. If this effect increases , and your damage zone has four or more cards or you persona rode this turn, choose one of your rear-guards with "Demonic Jewel Dragon" in its card name, and it gets ":When this unit attacks, [discard a card from hand], this unit's drive becomes 1, and it performs drive checks until end of that battle." until end of turn.