The Rider

Beginning at 3rd level, if you are mounted, you deal an extra 1d4 damage when you hit an unmounted Medium or Small foe with a melee attack. If you take the Dash action you may make an attack as a bonus action.

At 6th level, when you throw your spear with advantage, you automatically inflict maximum damage instead of rolling the dice. If you are mounted, you do not gain disadvantage when throwing your spear at long range.

Beginning at 10th level, when mounted, you can use your action to frighten someone with your glowering presence. When you do so, choose one creature within 30 feet that you can see. If the creature can see or hear you, it must succeed on a Wisdom saving throw (DC equal to 8 + your proficiency bonus + your Charisma modifier) or be Frightened of you until the end of your next turn.

On subsequent turns, you can use your action to extend the duration of this effect on the Frightened creature until the end of your next turn. The effect ends if the creature ends its turn out of line of sight or more than 60 feet away from you. If the creature succeeds on its saving throw, you can’t use this feature on that creature again until you’ve taken a long rest.

If you Dash into combat, you may use Intimidating Presence as a bonus action.

Note that using Intimidating Presence doesn’t normally count as a Misdeed – although the Loremaster might decide otherwise if the Slayer abuses their menacing influence to bully innocent folk without cause.

At 14th level, you can inspire your allies. As a bonus action, you may blow your horn or shout a battle-cry. If you do, a number of allies equal to 1+ your Charisma modifier gain the benefits of your Reckless Attack feature. If an ally makes a Reckless Attack, they get to add your Fury Damage bonus to their damage rolls.