Twelve Moons [Eberron, 3.5]

[Caduceus]

I'm currently running a 3.5 Eberron campaign and I'd like for there to be special effects based upon the phases of the moons. Each character will have been born under one of the twelve moons, and that moon governs these effects. Different effects occur based upon whether the governing moon is full, waxing, waning, new, or ascendant (the brightest phase that occurs during the entire month named for that moon). I've gotten started on this, but I need help finishing it. What I have so far can be found in the spoiler below.

Zarantyr, the Storm Moon
Color: Pearly white
Associated Dragonmark: Storm
Approximate Diameter: 1,250 miles
Approximate Mean Distance from Eberron: 14,300 miles
Full: Spend an action point to make your weapon shocking for 1 turn.
Waning: You take 1.25x damage from electrical attacks
New: You take 1.5x damage from electrical attacks.
Waxing: You gain resist electricity 3.
Ascendant: Spend an action point to cast gust of wind.

Olarune, The Sentinel
Color: Pale orange
Associated Dragonmark: Sentinel
Approximate Diameter: 950 miles
Approximate Mean Distance from Eberron: 22,500 miles
Full: Spend an action point to gain +1d4 enhancement bonus to AC.
Waning: You take an extra point of damage from critical hits and sneak attacks.
New: You take -2 penalty to AC and an extra point of damage from critical hits and sneak attacks.
Waxing:
Ascendant: Spend an action point to gain/grant immunity to sneak attacks and critical hits for one round as an immediate action.

Therendor, The Healer's Moon
Color: Pale gray
Associated Dragonmark: Healing
Approximate Diameter: 1,100 miles
Approximate Mean Distance from Eberron: 39,000 miles
Full:
Waning:
New:
Waxing:
Ascendant: Spend an action point to cast cure (light/moderate/etc.) wounds.

Eyre, the Anvil
Color: Silver-gray
Associated Dragonmark: Making
Approximate Diameter: 1,200 miles
Approximate Mean Distance from Eberron: 52,000 miles
Full: Spend an action point to cast make whole. +2 to Craft checks.
Waning:
New: -2 to Craft checks.
Waxing:
Ascendant:

Dravago, the Herder's Moon
Color: Pale lavender
Associated Dragonmark: Handling
Approximate Diameter: 2,000 miles
Approximate Mean Distance from Eberron: 77,500 miles
Full:
Waning:
New:
Waxing:
Ascendant: Spend an action point to cast charm animal.

Nymm, the Crown or King Nymm
Color: Pale yellow
Associated Dragonmark: Hospitality
Approximate Diameter: 900 miles
Approximate Mean Distance from Eberron: 95,000 miles
Full:
Waning:
New:
Waxing:
Ascendant:

Lharvion, the Eye
Color: Dull white with black slit
Associated Dragonmark: Detection
Approximate Diameter: 1,350 miles
Approximate Mean Distance from Eberron: 125,000 miles
Full: +1d6 to Spot and Search checks. Can find
Waning:
New:
Waxing: +2 to Spot and Search checks.
Ascendant: Spend an action point to cast arcane eye.

Barrakas, the Lantern
Color: Pale gray
Associated Dragonmark: Finding
Approximate Diameter: 1,500 miles
Approximate Mean Distance from Eberron: 144,000 miles
Full:
Waning:
New:
Waxing:
Ascendant:

Rhaan, the Book
Color: Pale blue
Associated Dragonmark: Scribing
Approximate Diameter: 800 miles
Approximate Mean Distance from Eberron: 168,000 miles
Full:
Waning: -2 to Perform checks.
New:
Waxing:
Ascendant:

Sypheros, the Shadow
Color: Smoky gray
Associated Dragonmark: Shadow
Approximate Diameter: 1,200 miles
Approximate Mean Distance from Eberron: 193,000 miles
Full:
Waning:
New:
Waxing:
Ascendant:

Aryth, the Gateway
Color: Orange-red
Associated Dragonmark: Passage
Approximate Diameter: 1,000 miles
Approximate Mean Distance from Eberron: 221,000 miles
Full:
Waning:
New:
Waxing:
Ascendant:

Vult, the Warding Moon
Color: Gray and pockmarked
Associated Dragonmark: Warding
Approximate Diameter: 1,800 miles
Approximate Mean Distance from Eberron: 252,000 miles
Full:
Waning:
New:
Waxing:
Ascendant:

[AstralFire]

You might wish to provide a link to that web article that explains the moons. I've never bothered much with them, so I can't think of anything off the top of me head.

[Lorien077]

Sounds really interesting thus far (coming from someone who knows a tiny bit about Eberron) but you gotta keep in mind some of the penalties associated with new moons seem much more... deadly than others. It seems thus far you're scaling benefits during full moon with de-buffs during new moon, but I'd recommend making them all approximately the same as far as power level goes, other wise people may try to min-max with it.
I'd also like to note I already envy your players, this is a pretty cool concept. D:

[Lappy9000]

It's a cool idea, but may end up being more bookwork if you're already using the coterminous planes of Eberron.

And where the heck did you get the diameters of Eberron's moons?

[AstralFire]

Said link has it; I've seen it before, but don't have it off-hand.

[Caduceus]

http://wizards.com/default.asp?x=dnd/ebds/20050307a

That's the link. I kept thinking I left something out in that first post. Also, it was my intent for the players to roll a d12 for the month of their birth and pick a day between 1 and 28. And it's not that much bookwork, considering there's actually a downloadable tool that provides both the moon phases and the planar positioning information.