Abyss’ Arrival

Summon a magic sword from the sky which sticks into the ground and forms a magic array with a radius of 5m, dealing Dark P.DMG equal to P.ATK*360% per sec to all enemies within it, and reducing their P.ATK and M.ATK by 500. The magic array lasts 20s. Only 1 can exist at a time (the skill doesn't increase Frenzy). Runemaster can choose whether to convert their ATK type to Dark.