Thanks a lot, tsunamisurfer08! This has been updated now.
The new Legends patch classes (Demon Slayer, Mercedes, and Cannoneer) can do this as well as other classes now. The skills needed to activate the sigils in various stages are:
Cannoneer: Scatter Shot, Barrel Bomb
Mercedes: Piercing Storm, Rising Rush
Demon Slayer: Soul Eater, Dark Thrust
Also, for Battle Mages, Quadruple Blow works as well.
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