You inherit the spells at each indicated ranger level in the Slayer Spells table as ranger spells.
You gain the following effects:
When you use your Hunter's Mark feature, you can take the Study action to learn the creature's type as part of the same action. You also learn which creatures within 60 fett of you has the same creature type as the target.
When a creature marked by your Hunter's Mark feature is reduced to 0 hit points, you can take a reaction to use your Hunter's Mark feature on another creature, provided the other creature is of the same type, without expending one use of your Channel Nature feature.
When a creature of the same type as a creature marked by your Hunter's Mark feature takes the Hide action within 60 feet of you, it has disadvantage on the Dexterity (Stealth) check, and you have advantage on Wisdom (Perception) checks made as part of the Search action to attempt to locate the creature.
When a creature takes the Attack action against you, you can take a reaction to gain one of the following effects of your choice:
You gain a bonus to your AC equal to your Wisdom modifier against all subsequent attacks made by the creature until the start of your next turn.
You halve the attack's damage.
The creature must make a Wisdom saving throw against your spellcasting DC. On a failed save, the creature must repeat the same attack against another creature of your choice.
Moreover, when you make a Dexterity saving throw to take half damage, you can take a reaction to take no damage on a successful save, or half damage on a failed one.
When you take the Attack action, you can target any number of creatures within 10 feet of you. You make an attack roll against each target, and if you use a ranged weapon, you provide ammunition for each target.
Once you use this feature, you can't use it again until you finish a short rest, unless you expend one use of your Channel Nature feature.
When you take the Attack action against a target and have advantage on the attack roll, you can forgo the advantage to take an additional Attack action as one action against the same target. If the target is marked by your Hunter's Mark feature, the additional attack roll's critical hit threshold is lowered by 1.
When you take the Attack action against a creature marked by your Hunter's Mark feature, you can add your Wisdom modifier to the attack or the damage roll.