Witch Builds?

Drop magic missile. You should only have 5 points in it, and invest the remaining points into more useful skills like Lava Potion and Flame Furnace. You could also drop some points from Shururu. Invest those points in Snow Dust and Acid Rain. Acid Rain works beautifully with Lava Potion and Shururu, and the dust skills let you turn your physical attacks into magical attack drastically increasing their strength. Black Manteau is also good because it lets you gather monsters to use in combination with Lava, Acid and Shururu.