Demonic Jewel Dragon, Drajeweled

[ACT](VC)[1/Turn]:[COST][Counter-Blast 1], and [Soul-Charge 2]. If all of the cards [Soul-Charge] have different grades, you may draw a card. [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, increase or decrease its [Power] to 1, and if your opponent's vanguard is grade 3 or greater, this unit gets [Critical]+1. ([Power] at that time becomes 1, and can increase or decrease afterwards)