Oath of the Ancients Paladin Guide

When a creature within 10 feet of you that you can see hits a target with an attack roll, you can use your Reaction to add your Charisma modifier to the attack roll or saving throw DC. In addition, when you cast a spell that deals damage, you can spend 1 spell slot to increase the damage by 1d6 per spell slot spent.

You gain oath spells at the paladin levels listed in the Oath of the Ancients Spells table. [Oath of the Ancients Spells: 1st - Entangle, Goodberry; 2nd - Barkskin, Spike Growth; 3rd - Call Lightning, Plant Growth; 4th - Grasping Vine, Guardian of Nature; 5th - Maelstrom, Wrath of Nature]

Ancient magic still lingers in your aura, shielding you and your allies from fey and undead creatures. You and friendly creatures within 10 feet of you have Resistance to damage from spells. In addition, creatures within 10 feet of you have Advantage on saving throws against being Charmed or Frightened.

You gain the ability to sense the presence of undead within 1 mile of you. If you sense undead this way, you know their general direction. When you sense undead this way, you can use your Reaction to gain Advantage on attack rolls against that creature until the end of your next turn.

When you reach 20th level, you can use your action to gain temporary hit points equal to your Paladin level + your Charisma modifier. Additionally, for 1 minute, whenever a friendly creature within 30 feet of you takes damage, you can use your Reaction to reduce that damage by half.