This skill lets you cancel any skill with Cast Time (ANY skill).
When an enemy spell is canceled, the target gets 2% of its Maximum HP as damage and the Sage absorbs a percentage of the SP used for the broken spell, also if the SkillLV is 5, the sage will also absorb half the Physical damage done to the target.
The success rate of this skill against Boss monsters is 10%. If this Spell is cast on an other Sage that uses Magic Rod, Magic Rod is not broken and the Spell Breaker caster loses 20% SP.