Mistake

Rating: 1.8/5, but 4/5 for low-level Agility Srams, and 2.8/5 for higher level Agility Srams.

Boost it with spell points?: No, unless you're an Agility Sram. If you are, then boost Mistake to Level 5.

For non-Agility Srams, Mistake is rarely useful. Most of the time, it will only be helpful against an enemy who resists/negates Earth and Neutral damage, but is vulnerable to Air damage. Boosting Mistake for the Agility and Strength increases might be tempting, but it really isn't worth the spell point investment. However, if you are an Agility Sram, then Mistake will be one of your main attacks for a long time, since it deals a decent amount of damage, and since it's the only Air attack that you get until Lv70. If you are an Agility Sram, it would be a wise idea to find a weapon that either naturally deals Air damage, or that has been altered to deal Air damage through forgemaging. For Agility Srams, the Agility boost from Mistake is merely a nice bonus that can add on a few more points of damage.