That One Attack

The Legend of Devils:
* "Earth Wave" and "Icy Lightblast" are the first. Found in the sixth castle.
* "Soul Drain" from the water cave.
* "Super Storm" and "Dark Burning". Found in the seventh castle.
* "Ice Rain". Found in the eighth castle.
* "Storm Inferno". From the Ice Cave.
* "Earth Wave". From the Pyramid as a REGULAR skill.
* "Star Rain". From the ninth castle. The Death Lord also uses some in the Advanced mode.
* ALL THREE ATTACKS FROM HARRY.
* The five skills from Satan, especially the Death Satan. The four notable ones: Pure Darkness, costs the party ~5000 HP, unless the group has activated barriers, Death, a ~9000HP damage for one (cannot be minimized), Devil Axe, a ~2500 HP on one (cannot be minimized) and Elementarus, a ~3000HP to the group unless an elemental barrier is activated.