The Second Mythisch, "Midgardsormr" Garzorums

[AUTO]:When this unit is placed on (RC) during your battle phase, if you have a grade 3 or greater vanguard with "Veissrugr" in its card name, [COST][Counter-Blast 1], and until end of your opponent's next turn, this unit cannot be chosen by your opponent's card effects, and can attack from the back row. [CONT](RC):During your turn, if your opponent's vanguard is grade 3 or greater, this unit gets [Power]+5000. If you played a normal order this turn, this unit gets [Power]+15000 instead of +5000.