MP: Damage Ratio
Where spells are evaluated based on the damage they provide for the MP they cost. Spells Benthic Typhoon, Delta Thrust and Heavy Strike have higher MP: Damage ratio's than spells such as Amorphic Spike's.
This isn't straightforward to evaluate as damage is never a constant result, and different situations adjust independant variable's greatly. However as a
brief example:
Let's assume Heavy Strike deals ~1500 damage constantly, and Amorphic Spikes does ~3000. MP cost for each spells are 32 and 79 respectively. Under this assumption, for every 1 MP
- Heavy Strike -1 MP:46 Damage (46.875 3 d.p. floored.)
- Amorphic Spikes - 1 MP: 37 Damage (37.975 3 d.p. floored)
With Heavy Strike, you are getting more bang for your buck!
Standalone you can roughly assume that the
Little 3 spells have the better MP

amage ratio's but spells such as Amorphic Spikes have great skillchain's where you're effectively doubling the damage you put out.