Alistar, The Silver Phantom

Healing Rifle. When Alistor uses his rifle, he can load a special dart that does healing. Roll to hit. On a hit, he can do 1d8 healing. He can further expend spell slots to make the healing more potent.

Uncanny Dodge.  When Alistor is hit, he use his reaction to halve the damage.

Spellcasting. Alistor is a 15th-level spellcaster. Its spellcasting ability is Alistor (spell save DC 19, +9 to hit with spell attacks). Alistor has following ranger spells prepared:

Cantrips (at will): Spare the Dying, Chill Touch, Mending, Prestidigitation

1st level (8 slots): Cure Wounds, Healing Word, Goodberry, Hunter's Mark

2nd level (6 slots): Healing Spirit, Lesser Restoration, Prayer of Healing, Protection from Poison, Cordon of Arrows, Pass without a Trace, Spike Growth

3rd level (6 slots): Aura of Vitality, Life Transference, Mass Healing Word, Revivify, Plant Growth, Protection from Energy, Conjure Barrage

4th level (4 slots): Aura of Life, Guardian of Nature, Freedom of Movement

5th level (2 slots): Reincarnate, Mass Cure Wounds, Greater Restoration, Steel Wind Strike

Multiattack. Alistar can take three attacks.

The Scalpels. Melee Weapon Attack: +8 to hit, reach 5 ft., 1 target. Hit: 18 (2d6 + 12) slashing damage and 3 (1d6) force damage.

The Healer's Quarrel. RangedWeapon Attack: +9 to hit, range 5/500 ft., 1 target. Hit: (2d8 + 12) piercing damage and 3 (1d6) poison damage.

Alistar has 8 legendary actions.

Healing Shot. Alistar takes a healing shot.

Dart of Death. Alistar takes an attack.

Circle of Life (2). Alistar slams a fist into the ground and heals his allies for 8d8 hit points.

Circle of Death (2). Alistar slams his fist into the ground. Anyone within 30 feet of him must make a DC 22 Constitution saving throw. On a failure, they take 8d8 radiant damage.

The Ranger of Health. (3) Alistar touches an ally. They must make a DC 18 Constitution saving throw. On a failure, they restore 25% of their hit points. On a success, they heal half of their hit points. On a critical success, they are restored their total hit points.

Death's Whistle. (3) Alistar shots an enemy. They must make a DC 24 Constitution saving throw. On a failure, they take 40 (6d10 + 10) radiant damage. On a success, they talk half the damage.