تنين الأعماق برونتو

This card is treated as a Normal Monster while face-up on the field or in the Graveyard. While this card is face-up on the field, you can Normal Summon it to have it be treated as an Effect Monster with this effect:
● The original ATK of this card becomes 2300. If this card attacks, it is changed to Defense Position at the end of the Battle Phase. This card's battle position cannot be changed until the end of your next turn, except with a card effect.