The Old Gods
The Old Gods are ancient and powerful beings, said to have been around as long as life on Earth has existed. Whether or not this is true is impossible to tell, but they do love to be worshiped. In fact, these Old Gods will grant blessings to any who follow them. Below are a list of Gods and the benefits they give you.
Freya
Freya is the Goddess of nature, known to some as Mother Nature herself. It is said that a part of her resides in every living thing, as all life came from her. Her followers rely on meditation to grow closer to her, in hopes to one day reach enlightenment.
Once per long rest, you can cast Long Strider and Pass Without Trace spells without expending a spell slot. You also gain one mutation or symbiotic creature which lets you cast any one druid cantrip of your choice. Wisdom is your spellcasting ability for all three spells.
+2 Wisdom, +1 of your choice.
Apollo
Magic is performed by the mastery of music, and none have skills more impressing than the God of Music, Apollo. Apollo’s cult is much looser than most others, with no definite rules or values aside from Music.
You learn two cantrips and one 1st level spell from the Wizard class. Your spellcasting ability is Intelligence. You can cast the cantrips at will, and you can cast the 1st level spell once per long rest.
+2 Charisma, +1 of your choice.
Artemis
Artemis is the Goddess of the Night and the Hunt. She also created the technology known as Hard Light. This is an item - a pendant, ring, or similar trinket - that collects light and projects a solid object. Those who worship Artemis are known as Hunters, and most often get tattoos or other bodily markings to show their servitude towards the Great Astronomer Artemis.
Those who serve under Artemis can gain one Hard Light construct of your choice. This weapon/item weighs nothing, cannot be lost or stolen, and can be summoned/dismissed at will.
Whenever you have advantage on an attack roll, you can reroll one of the die once.
+2 Dexterity, +1 of your choice.
Thoth
Thoth is the smartest being in all the Multiverse, and a dedicated pacifist. He resides in the World’s Library in Sodom, where his disciples can gain access to any information in the Multiverse.
You gain the ability to read lips of any creature you can see that is speaking a language. Also, you have a +5 bonus to Passive Wisdom.
Gain proficiency in all Intelligence based abilities.
+2 Intelligence, +1 of your choice.
Mercury
Mercury is the God of the misfits, outcasts, and wanderers. All are accepted under his roof, and all lifestyles are welcomed. His cult operates more like a brotherhood than a church, where all are equal. Mercury truly is the God of the Common Man.
Pick one non-racial feat of your choice.
All under Mercury’s name are brothers and sisters. If you come across someone else in this cult, they will do anything for you as a fellow outsider.
+2 Constitution, +1 of your choice.
Kali
Kali is the Goddess of War and Death, but she is also a soft and loving figure. Those who serve under Kali understand that war is an art form, which should be worshiped and never taken lightly.
Whenever you take the Dodge action in combat, you can spend one Hit Die to heal yourself. Roll the die, add twice your Constitution modifier, and regain a number of hit points equal to the total. Also, whenever you roll a Hit Die to heal yourself, add twice your Constitution modifier to it instead of your base Constitution modifier.
+2 Strength, +1 of your choice.