Ragnarok Online/Skills/Fire Wall

Fire Wall

 * Active
 * Requirements: None
 * Mastered at Level 10

This skill creates a wall of fire which will block monsters approaching the caster. Any monster (except bosses and undead) which attempts to go through the fire wall will be knocked back and receive Fire elemental damage equal to half of the caster's MATK. It is useful for repelling cast sensor monsters long enough for you to use stronger magic (such as a high-level bolt) to do damage to them, while also doing a bit of damage on its own. Undead monsters and bosses, however, will simply pass through the wall immediately. They will still receive the same amount of damage, albeit instantaneously. You can have up to three fire walls up simultaneously.