Star-Touched

The sun, the moon, and the stars speak to your in the voiceless language of the cycles. The natural flow of seasons tugs at your blood as the tide acts upon the oceans, pushing and pulling with gentle insistence regardless of the storm's fury, the dragon's flight, or the antics of otherworldly primordials. Just as the constellations move around the sky in a steady, imperturbable cadence, your spells are strong and unshakable, tied to energies that can outlast the others.

Cosmic Bloodline

Starting when you choose this origin at 1st level, you show traces of your bizzare bloodline. Whenever you are conscious, you are in the phase of the sun, the moon, or the stars.

While you are in the phase of the sun, you glow, emitting bright light out to 10 feet and dim light out to 20 feet, and have resistance to fire damage.

While you are in the phase of the moon, color drains out of your skin, hair, eyes, and clothes, leaving you entirely white, and you have resistance to cold damage.

While you are in the phase of the stars, small points of light form and swirl on your skin and around your body, and you have resistance to psychic damage.

You determine what phase you are in whenever you wake up from unconsciousness or trance by rolling 1d4. On a result of 1, you are in the phase of the sun. On a result of 2, you are in the phase of the moon. On a result of 3, you are in the phase of the stars, and on a result of 4, you may choose which phase you're in.

Cosmic Casting

Also starting at 1st level, the phase you are in affects your spell casting.

While you are in the phase of the sun, you halve the amount of sorcery points it takes to create a spell slot (rounded up) and the amount of sorcery points you get from converting spells to sorcery points (also rounded up).

While you are in the phase of the moon, you may apply two metamagic effects that you know to any spell you cast rather than one- but must still pay for both.

While you are in the phase of the stars, when you apply a metamagic option to a spell, the metamagic's cost is reduced by 1 (to a minimum of 1).

Astrology

Starting at 6th level, you gain some control over your phase. You may reroll 1d4 to change your phase during a short rest. Once you use this feature, you must finish a long rest before you use this feature again.

Cosmic Body

Starting at 14th level, your phase starts to affect your body even at rest.

While you are in the phase of the sun, when you spend hit dice, you may take the maximum result instead of rolling to determine how many hit points you regain.

While you are in the phase of the moon, you are constantly under the effects of the Water Walk spell. While you are within 60 feet of a body of water large enough for you to stand on, you also gain resistance to fire and acid damage.

While you are in the phase of the stars, you may cast Mirror Image on yourself once until you finish a short or long rest. If you are still in the phase of the stars after the rest, you regain the ability to cast Mirror Image.

Cosmic Union

Starting at 18th level, you are constantly in two phases instead of one. Instead of rolling 1d4 at the end of each long or short rest, you roll two. If both result in the same number, you may choose your second phase.