When the enemy target’s current HP is 80%/50% of Max HP or lower, the DMG dealt to it by “Boneclaw, Doomdrake’s Embrace,” “Claw Splits the Veil,” “Breath Scorches the Shadow,” and “Wings Sweep the Ruins” is 120%/140% of the original DMG respectively.
The 400 spd cap is both for future proofing and for situations like in DU/SU where you can get mass...