What does dive do? Your creature flies high into the air and dives down, doubling its damage. What does TU do? Copies the current creature and its stats. Combined, the new creature keeps the doubled attack. This makes no sense at all. The creature isn't bigger, and when it's done with it's dive, it should return to the same "place" as the original, meaning it doesn't have the dive status anymore.
Sure, it's a nice combo, but the logic is so illogical, it needs to be addressed.