Forum:Dark deal

if i chain this card in response to my opponents normal spell activation and the card discarded is SILVA OR gOLDD of the dark world monsters, will both of their effects resolve or only their special summon? in other words, does "Dark Deal" meet the condition to activate the second parts of their effects even though it was i who activated it or does their spell card at that time literally become "your opponent discards 1 random card from their hand"? also, while "Necrovalley" is in play and i ativate "Royal Tribut", my darkworld effects wont be negated right?