Solar

(From Dungeons & Dragons Monster Manual - 2015):

A solar is godlike in its glory and power. On the battlefield, the solar’s sword flies into the fray on its own, and a single arrow from a solar’s bow can strike a target dead on contact. So great is a solar’s celestial might that even demon princes shrink at its resonant commands.

It is said that only twenty-four solars exist. The few solars that are known are stewards of specific deities. The others rest in a state of contemplation, waiting for the time when their services are needed to stave off some cosmic threat to the cause of good.

(from Planescape Monstrous Compendium Vol. I - 1994):

Solars are the most powerful aasimon and the greatest celestial stewards.

Solars are absolutely the most powerful servants of the good deities of the Upper Planes. Solars are mighty enough to be deities themselves, but they choose to serve rather than have worshipers.

Combat: Solars are never surprised and are immune to attacks from nonmagical weapons and magical weapons of +4 or lesser enchantment, to energy-level loss from undead or magic, and to charm, confusion, death spell, domination, feeblemind, hold, imprisonment, and trap the soul spells.

Each solar can cast a protection from evil spell wirh a 70-foot radius at will. This sphere also serves as protection from normal missiles and a minor globe of invulnerability if the solar desires. Solars can use any detect spell at will. When laying hands on a creature, a solar can bestow the ability to survive in any environment for up to 100 years.

Lawful-good solars can summon 1 to 2 ki-rins; neutral good solars can summon 1 to 2 phoenix; and chaotic good solars can summon 1 to 2 greater titans. Solars can perform the summoning three times per day with a 75% chance of success per summons.

Solars are not affected by cold, electrical, magic missile, petrification, poison, or any gas attack. They take no damage from acid attacks. They regenerate 7 hit points per melee round. Unless it is on its home plane, only the material form of a solar can be destroyed. Its spirit requires seven decades to reform.

Each solar attacks four times per round with a sword that only it can wield. The weapon acts as a sword +5 (2d20 points of damage) and has all the properties of a sword of dancing and a vorpal sword.

Solars also use an enormous composite bow with a magical quiver that produces any arrow of slaying the solar desires. Each bow attack has a +2 attack adjustment and slays any target it hits.

A solar has spells as a 15th-level priest with major access to all spheres. In addition to the powers common to aasimon, solars have the following spell-like powers: animate object (3 times per day), antipathy/sympathy (3 times per day), astral spell (once per day), commune, confusion (3 times per day), control weather, creeping doom (once per day), dispel evil, dispel magic, Drawmij’s instant summons, earthquake (3 times per day), finger of death (once per day), fire storm (once per day), heal, holy word (3 times per day), imprisonment (once per day), improved invisibility, infravision (240 feet, always active), mass charm (3 times per day), permanency (3 times per day), polymorph any object or self (once per day), power word (any variety, once per day), prismatic spray (once per day), restoration (once per day), resurrection (3 times per day), shape change (3 times per day), symbol (any variety, 3 times per day), vanish (3 times per day), vision (once per day), wind walk (7 times per day), and wish (once per day).