Universal Properties
Reduced Gravity. Objects only weigh one-half of their normal weight. Ranged weapon ranges are doubled. Jump distances are doubled (You can jump up to twice your Strength score on a long jump, and you can jump up to 6 + twice your Strength modifier in a high jump. This still costs movement as normal).
Enhanced Magic. Whenever you cast a spell, treat it as if you cast it with a spell one slot higher. When you cast a spell that has a duration of 1 minute or longer, you double its duration, to a maximum duration of 24 hours.
Overflowing Magic. Whenever you cast a spell at a level you don't have any remaining spell slots for, roll on the Ring of Siberys wild magic table. (With the Enhanced Magic property, this automatically triggers whenever you use your highest level spell slot)
This brilliant equatorial band of light
dominates the sky. Siberys dragonshards fall from the Ring of
Siberys, and its golden color suggests that the entire ring may
be comprised of these magical crystals. The Siberyan Theory,
as taught at Arcanix and the Arcane Congress, postulates that
all arcane magic manipulates energy that radiates from the
Ring—and magic itself is the Blood of Siberys.
- Exploring Eberron
The Ring of Siberys is the logical first stop in the space race, being closer than the moons and having a clear strategic value. If the DM would rather focus on the moons, the magical energies of the Ring can be deadly to living creatures. If the Ring is the destination, the first question is whether the Ring has gravity and atmosphere. This is the most magical place in existence, so anything is possible. The next question is whether the Ring is in fact entirely comprised of massive dragonshards, or if the bulk of it is some other material; it could be a soft stone, that some might see as the calcified flesh of an ancient dragon. Even if there is an atmosphere, the Ring is entirely barren. People may be able to dig into it or build structures on the surface, but there’s no natural sources of food or water; travelers will need to either have strong supply lines, or more likely, to come prepared with ways to magically create food and water.
Magic is dramatically enhanced within the Ring. One option is that all spells cast in the Ring benefit from the Distant Spell and Extended Spell Metamagic options presented in the sorcerer class. But it’s difficult to channel this power; if the DM uses this option, all spellcasting carries the risk of a sorcerer’s Wild Magic Surge. With time, it could be that spellcasters could learn unique spells that can only be cast in the magic-rich environment of the Ring.
Even if the energies of the Ring aren’t directly lethal, they can produce many dangerous effects. Just as the energies of the Ring can be used to produce fireballs and lighting bolts, the Ring produces dramatic, unnatural weather effects—bursts of fire, acid rain, illusory manifestations, psychic storms. The Ring also produces living spells, which linger for a time before being absorbed back into the Ring. Other native creatures are rare, given the difficulty of surviving in the RIng. However, just as the rakshasa are said to be the children of Khyber, the native celestials of Eberron—the couatl—are said to have been born of Siberys. While most of the couatl sacrificed their existence to bind the overlords, there could be a few powerful celestials still bound to the Ring. Given that Thrane isn’t a major player in the space race, the first explorers could be surprised to discover embodiments of the Silver Flame itself in the Ring of Siberys.
There’s another exotic possibility. Legends speak of the Irsvern—winged kobolds said to be blessed by Siberys. According to these tales the Irsvern live on the peaks of the tallest mountains; but what if they’re actually natives of the Ring of Siberys? What powers might these children of the Ring possess?