Demonic Jewel True Dragon, Drajeweled Ignis D-BT13/FFR04 FFR

[CONT]:This card can only be ridden from a unit with "Drajeweled" in its card name. [AUTO](VC):At the beginning of your battle phase, choose two cards from your drop, and put them into soul. Then, if your soul has four or more cards with different grades, all of your front row unit get [Power]+15000 until end of turn. [AUTO](VC):When this ability's cost would be paid, a card with "Drajeweled" in its card name in your soul may be Soul Blast as any grade from 0 to 4. When this unit attacks, COST [Soul Blast (5) cards with different grades], retire all of your opponent's back row rear-guards, until end of turn, this unit gets [Critical]+1, and increase or decrease the [Power] of all of your opponent's front row units to 0.