Light Ray Monster, Rayvilis DZ-BT03/010 RRR

[AUTO]:When this unit is placed on (RC) by the ability of your vanguard with "Arkhite" in its card name, this unit gets "[AUTO](RC):When this unit attacks, COST [Counter Blast (1)], choose one of your opponent's vanguards, and it gets [Power]-5000 until end of turn." until end of turn. If your opponent's vanguard is grade 3 or greater, this unit gets [Power]+10000/[Critical]+1 until end of turn. [CONT](RC):This unit cannot be chosen by your opponent's card effects.