A free art fought with a greatsword in both hands: the art's own Purple Heaven Zhanmadao, or any weapon Epic Fight holds as a greatsword. Its strength is weight: you cannot be moved while you swing, and the drums you beat become lightning.

• Learned from the Purple Heaven Thunder Saber Manual, which teaches the art and Thunder Descends. The sky gives it, once per player: in a thunderstorm, stand beside a lightning rod under the open sky, a greatsword in hand, from the Qi Crystallization realm. The manual only teaches from the Qi Condensation realm.
• Without a greatsword in hand, a technique says it "needs a greatsword in both hands".

Techniques

• Thunder Descends · Rolling Thunder · Heaven's Drum · Severing Flash · Nine Heavens' Wrath
• Secret: Heaven Answers · Ultimate: Thunder Sovereign's Descent · Finisher: The Last Thunderclap

M1 and passive: Rolling Drums

Your M1s are Epic Fight's greatsword strikes: its two-strike chain, its dash attack and its air slash.

• Every strike that lands beats a thunder drum: three beats fill a drum, three drums at most. A perfect parry beats twice.
• Each technique spends one full drum if you have one and becomes its thunder version. Without a full drum it is cast plain.
• Unshaken: while a strike swings and while a technique plays, you cannot be staggered or pushed. You still take the damage.
• The chain's last strike, with a drum full, lets go a small discharge: the enemies within 2 blocks of the target are struck (×0.3), and all are electrified. It does not spend the drum.
• Electrified: a body the thunder struck is slowed for 3 seconds, and the art's blows do 30 % more to it.
• Under a real thunderstorm, out in the open, every beat counts double.
• After 8 seconds without a blow, the beats fade, one every 2 seconds.

Quests

• The First Drum: all three drums filled 0/20 → Rolling Thunder
• Unmoved: blows taken without being staggered 0/50 → Heaven's Drum
• The Drum Answers: blows stopped by Heaven's Drum 0/30 → Severing Flash
• Call Down the Sky: Severing Flashes cutting three electrified enemies 0/10 → Nine Heavens' Wrath
• The Sovereign's Path: enemies struck by the bolts of the storm 0/100 → Thunder Sovereign's Descent

Evolutions

• 30 · Second Thunder: Thunder Descends can be cast again once, free, within 2 s, if it struck.
• 60 · Third Turn: Rolling Thunder turns three times.
• 90 · Lingering Storm: Nine Heavens' Wrath leaves its storm 4 s over the circle, a bolt a second on the electrified.