Codex Oraculus

Wondrous item, artifact, requires attunement

The Book of Prophecy's author is thought to be mythical sapphire dragonborn Kalizaxorus, though modern sages posit that they were only recording magics and knowledge they had seen through their viewing of future manifolds of the timescape.

Whoever the true authors were, they were careful to maintain causal integrity in their writings. The codex oraculus is not an actual book of prophecy per se, it is instead a treatise of the act of divining itself, techniques and rituals for perfect prediction of future events or perception of distant ones. This careful distinction between true prophecy and the means of prophecy is the only reason those in the Court of Inexorables suffer it to exist. Those who use it should be careful, however, as mis-(or even just regular) use could break the Law of Time or Fate.

It has been said that overuse of this codex will make the user go blind, but they say that about a lot of things.

Master of Divination

Your divination spells cannot be resisted.

All Seeing

You gain truesight out to a range of 60 feet and you are aware of any and all divination spells cast on or by any objects or creature within 300 feet of you, including yourself. If you perceive any divination spells within this radius, you may immediately seize the spell and reverse or alter its effects

If it is a spell that grants sight or enhanced perception, such as hunter's mark or clairvoyance you can reverse it such that you are casting it on or at the location the original spellcaster, without a save.

If it is a spell that grants knowledge or foreknowledge, such as identify, legend lore or foresight, you gain the benefit or knowledge of the spell and can cause the spell to fail or to provide false information of your choice .

If it is a spell that contacts an entity for advice, such as commune or divination, you may listen in and receive the same information as the caster, or you may seize the connection and ask the entity yourself. Be warned, though, Cthulu and its ilk do not take kindly to being magic-wire-tapped!

Sight Beyond Sight

Once per day, as an action, you can perceive the location of any creature or object.

Portent Dictata

During a long rest, you may sacrifice any number of Hit Dice to gaze into the future. You may replace a number of dice rolls equal to the amount of Hit Dice you sacrificed with any number you like between minimum and maximum on the die. These can be any type or roll: damage, attack, ability check or saving throw; and it can be any roll that you can see (through your own eyes or any divination sensors).

Prophet

Once a year, you may perform an day-long ritual to prophesy some doom in the distant future. This prophecy will be vague and very heavy-handily poetic, which means that no matter what, at least one interpretation will be correct. It may turn out that you prophesy that seems like it is about the destruction of the city of Capital is actually about the destruction of a child's sandcastle, but that's not for you to worry about, you'll be long gone by then and you'll still be right!

The Red String

Once per month, you may make a grand prediction in but a moment. At the beginning of a round before all other actions, you gaze into the codex oraculus. You then go through the round as normal, but once the round is over, you look up from the codex oraculus back up at the beginning of the round. All other creatures and events transpire in the exact same way as the vision you saw, but you are free to take different actions. Additionally, you may sacrifice a Hit Die to use additional reactions beyond your first during that round.