Combo Evaluation points will be added normally, and the rank will be D. The multiplier for the number of additional orbs accumulated will be the same.
Since Magma Drive hits just before an attack with straight charge, add 24 points for the “base value” and 12 points for the “follow up bonus”. Raises the rank to C and doubles the number of additional orbs accumulated.
If the added combo score is high, the rank may be skipped by one. The multiplier for the number of open additions is further increased.
As an attack with a low combo score the rank remains A. The number of additional orbs is gain is 1.5 more because of the high multiplier.
The total exceeds 128 points and becomes the highest rank S. If you kill the enemy additional 17 red orbs will appear.