Originally Posted by
Shurrikhan
That wasn't true of Impact when it was a single-target spell. Its combined mana gain was higher than Veraero or Verthunder.
Thus, we have no precedent for "A single-element spell must always contribute more mana than the sum of a dual-element spell's contributions." Impulse broke that rule, if ever it was a thing.
But, let's say we remove Impulse. No old Impulse, nor the new Impluse yet. At that point we'd have made firm another rule, "Long casts generate more mana (combined) than short casts."
In which case... why does new Impulse, a long cast, generate less MP combined than Verthunder II or Veraero II, each short casts?