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.

Interrupts a magic spell cast by an enemy and receive the SP the enemy used to cast that spell, as well as reduce 2% of the enemy's HP.
At skill 5 and above, half of this HP damage is absorbed by the caster.
HP cannot be drained from Boss monsters and Guardians, but this skill does have 10% chance of interrupting Boss monster spells.