From what I understand, the field is treated as Necrovalley but the effects of the field spell are not present. Makes sense because you need the text that includes what Necrovalley does to apply those effects.
So i sumonned this card with no field spells on my side but my oponent had an harpie's ground. Next turn i destroyed her field spell so there was no fields face up on the board and the effect (the field is treated as Necrovalley) didn't activate, any suggestion?
I thinkvits cuz you activated it before you got rid of the field spell
I don't understand this card, why his effects works when Yami is on ennemy field and Harpie's Hunting Ground on mine ? Is it a bug or i'm really stupid but its clearly stated "While there is NO face-up Field Spell Card"