The thing is that it criples your quanta.
Dive ability is proportional to the attack of the creature.
Somone suggested attacked divided by 4.
ie:
1. Jade Dragon (12|9). Cost is 12x
2. Cast Flight. Cost is 3x
3. The effect would take 1 turn to take effect or it would be instant?
4. The cost of Dive = "creature attack"/4 (rounded down).
For this case 12/4 = 3.
5. Use dive. Cost 3x
6. Output damage is 24 for 1 turn
In my personal opinion I would increase the dive cost, using the "divided by" 3 or 2.
12 attack = 4 or 6 quanta to dive
11 attack = 4 or 5
10 attack = 3 or 5
9 attack = 3 or 4
8 attack = 3 or 4
7 attack = 2 or 3
6 attack = 2 or 3
5 attack = 2 or 2
I would say that minimun cost should be 2x
My two cents