Mounted Whirlwind Attack

[robintime]

Riders can whirlwind attack with a two-handed weapon and while dual wielding, but not with a one-handed weapon. This denies weapon master cavaliers their rightful instant attack unless they forgo 7 AC from their best shield, making them strictly worse than a regular fighter weapon master. Any WM/cav who wishes to utilize one of the cornerstones of weapon master combat must endure having about 46 AC as a frontliner.

I propose that cavaliers in specific gain the ability to whirlwind on their horse with a one-handed weapon. Gating this behind cavalier prevents mounted combat from becoming a must-take feat for weapon masters. Since whirlwind attack imposes a cooldown on charge and vice versa, unpleasant combos involving both in the same flurry are entirely prevented.

[Kalopsia]

Rejected, as it's an intended design for the whirlwind attack to be only usable by mounted dual-wielders or two-handers and no one else.