Soul Burn grants a chance to fully drain the SP amount of a target. If this skill succeeds, the target's SP will be fully drained, if it fails your mana will be drained instead. When this skill is mastered at Level 5, it will also inflict twice as much damage as the target's SP amount; however, if it fails, the caster will receive an amount of damage equal to twice the caster's SP amount. (Please notice that you will only take damage if it fails at level 5, lower levels will not damage yourself). On iRO, this skill is known as Soul Siphon.