Caleb, Druid of the Bear (Lydia's Brother)

Spellcasting. Caleb is a 15th-level spellcaster. His spellcasting ability is Wisdom (spell save DC 18, +10 to hit with spell attacks). It has the following druid spells prepared: 

Cantrips (at will):  druidcraft, infestation, Poison spray,thorn whip

1st level (4 slots): entangle, cure wounds, faerie fire, absorb elements

2nd level (4 slots): hold person, barkskin, spike growth, spiritual weapon  

3rd level (3 slots): plant growth, counterspell, Erupting earth

4th level (3 slots): blight, freedom of movement, polymorph

5th level (2 slots): contagion, wrath of nature

6th level (1 slot): Druid Grove

7th level (1 slot): regenerate

Wild Shape (2/day). As an action, Caleb can magically assume the shape of a beast (Max CR 1). He can stay in beast shape for 3 hours before reverting back to his normal form (or as a bonus action earlier or if he falls unconscious, drop to 0 hit points, or dies). When he transforms, he assumes the beast’s hit points and Hit Dice. When he reverts to his normal form, he returns to the number of hit points he had before he transformed. However, if he reverts as a result of dropping to 0 hit points, any excess damage carries over to his normal form.

Deranged. When Caleb's health is reduced to half or less he becomes deranged. Deranged creatures are highly chaotic. When he is forced to make a saving throw, roll a d6. 1-2 - He rolls the save. 3-5 - The effect of the saving throw is reversed on the creature that forced him to make the save. Caleb acts as the origin of the spell. 6 - Caleb automatically passes the saving throw

When he is attacked, roll a d6. 1-2 - the attack is goes as normal. 3-5 - The attack is mostly dodged Caleb only takes half the damage. 6 - The attack is parried and no damage is taken. 

Staff of the Bear. (8 charges) Melee Weapon Attack: +10 to hit ( reach 5 ft., one target. Hit: 8 (2d8+5) bludgeoning plus (1d8) slashing damage

One with the Bear

(Bonus Action) Gains 42 temporary hit points  the damage of his Protection of the Bear feature doubles, and his melee weapon attacks deal an extra 1d6 slashing damage to any target they hit. These benefits last for 10 minutes.

Bear Spirit

(Bonus Action) Caleb can call forth a bear spirit that grants Caleb and his allies its' might and endurance. Each creature of his choice in the aura when the spirit appears gains 20 temporary hit points and advantage on Strength checks and saving throws while in the aura. The spirit stays for 1 minute or until Caleb is incapacitated.

Protection of the Bear

Caleb is protected by the bear spirit and it attacks those who attack him. To do so, it uses his reaction to deal 12 slashing damage to the attacking creature  if it is within 20 feet of him. +10 to hit.

Oath of the Bear

Caleb is protected by the bear spirit through an oath. He can call on the spirit of the bear to attack his enemies 1 per round. When he does so four spectral bears appear in a place he can see within 60 ft of him and attack all enemies within a 20 ft radius. Those in the radius have to make a DC 17 dexterity saving throw. On a fail they take 22 (3D12 + 4) slashing damage or half as much on a save. A natural 20 takes no damage.