D-Hero Diamond Guy

No. Perchè a quel punto non si attiva la magia normale ma solo il suo effetto dal cimitero.

"Destiny Hero - Diamond Dude" doesn’t actually activate the Normal Spell card itself. Instead, he just activates its effect. So the Spell Card remains in the Graveyard.

Since the Spell Card itself is not activated (only its effect is), your opponent cannot chain “Magic Jammer”, “Dark Deal”, or any other card that has to be chained to the activation of a Spell Card.