Rush: Makes a mad dash forward

Rush: Makes a mad dash forward, pushing off up to 10 monsters. [Affects up to 15 enemies]
Rush effects[show]

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Beholder: The dark spirit is summoned from within you. Your weapon mastery is increased by the presence of the dark spirit.
Beholder effects[show]

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Beholder Healing: The dark spirit rejuvenates you every fixed interval. If by using this skill you would go above the critical HP of Berserk, this skill is not used.
Beholder Healing effects[show]

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Beholder Enchantment: The dark spirit rises your ability every fixed interval. With skill level, you will receive either extra physical defense, magic defense, avoidability, accuracy, or weapon attack - it rises at random.
Beholder Enchantment effects[show]

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Berserk: When your HP is below a fixed percentage, the shackles of the dark knight are released and the attack damage increases immensely. When your HP is above this fixed percentage, this skill is cancelled.
Berserk effectshttp://strategywiki.org/wiki/MapleStory/Warrior_Guide/Skills