Demonic Jewel Dragon, Drajeweled

: 1, and 2. If all of the cards have different grades, you may draw a card. :When this unit attacks a vanguard, [ 4 cards with different grades], choose one of your opponent's vanguards, until end of turn, increase or decrease its to 1, and if your opponent's vanguard is grade 3 or greater, this unit gets +1. ( at that time becomes 1, and can increase or decrease afterwards)