Demonic Jewel Dragon Emperor, Drajeweled Magnus DZ-BT10/004 RRR

[AUTO](VC):At the beginning of your ride phase, choose two cards from your drop, and put them into soul. [AUTO](VC):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 [Power]+5000 until end of turn. [AUTO](VC):When this unit attacks a vanguard, COST [Soul Blast (4) cards with different grades], choose one of your opponent's vanguards, until end of turn, its [Power] becomes 0, and if your opponent's vanguard is grade 3 or greater, this unit gets [Critical]+1. If this effect increases [Critical], 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 "[AUTO](RC)1/Turn:When this unit attacks, COST [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.