Defining Full Telepathy vs. Limited Telepathy

I've been working on a pretty significant new d30-related book—well, really books... plural (more to come in future posts). And I realized I was assigning creatures as having Telepathy or Limited Telepathy, without really knowing what that actually means. For example, many AD&D Monster Manual creatures are noted as having "limited telepathy" but never really describe what that means—like the lammasu... "Lammasu communicate in their own tongue, the language of lawful good, and through a limited form of telepathy."

Okay... so what are the limits?

They got better about this in 2e, but I set out to define Full Telepathy vs. Limited Telepathy (particularly for how it would be treated in my House Rules). So here goes...

FULL TELEPATHY

Full Telepathy supports full and clear mental communication with other creatures with very few restrictions.

• Usable at will. Full Telepathy, as an inherent ability (vs. a spell-like ability) is usable at will.
• Sentience is required. In order for the communication to take place, the target creature must have an intelligence of at least 1.
• No common language is needed. The telepath and the target need not share a common language.
• Two-way communication is supported. Full telepathy is always two-way, allowing for a conversation.
• A longer range is achievable. The standard range for Full Telepathy is 90'.
• Sighting isn't required. Full Telepathy allows for the telepath to “sense” the presence of other minds within range and target them directly.
• Communication is possible to select multiple creatures at once. The telepath can communicate with as many eligilbe targets within the range as they choose, but only one message may conveyed at a time (that is, the telepath may not conduct multiple conversations at once, unless otherwise described for that individual telepath). 
• Communication is quicker than normal speech. Full telepathy allows for the conveyance of abstract concepts beyond simple words, allowing for much quicker communication (particularly over the linear limitations of speaking and the rudimentary nature of Limited Telepathy).
• Concentration is not required. The telepath is usually able to perform other physical actions (e.g., combat, use of a breath weapon) while using Full Telepathy. Spellcasting, however, is typically prohibited while communicating telepathically (given the verbal component required). Full Telepath does not, however, hinder the use of spell-like abilities (that don’t require the verbal components of spellcasting).

LIMITED TELEPATHY

Limited Telepathy has any number of specific restrictions that kept it from being as versatile as Full Telepathy. The following limitations are common, but all of them need not apply, nor are they limited to the ones noted below.

• Usable at only certain times or under certain conditions: Though commonly usable at will, the use of Limited Telepath may have limitations that constrain when, where, and how often it may be used (e.g., in the Astral Plane, 3×/day, for 10 minutes every hour, etc.)
• Higher Intelligence Requirement: Like Full Telepathy, order for the Limited Telepathy to take place, the target creature must have an intelligence of at least 1. However, a higher Intelligence (e.g., 3 or greater) may be required.
• Shared language required: The telepathy functions only if both creatures share a common language. This may be the most common limitation.
• One-way communication: Under this circumstance, the telepath is able to either: a) send thoughts, emotions, or images to another creature, but not receive them in return; or b) understand the meaning of a speaker’s words, even if the telepath doesn’t speak the same language.
• Limited to simple concepts: Some forms of Limited Telepathy are limited to conveying only simple ideas, feelings, or images rather than complex thoughts or conversations.
• Species-specific: In such cases, the telepathy only works between members of the same species.
• Limited range: The distance over which the telepathy operates may be significantly shorter (e.g., as little as 10').
• Sighting required: The telepath may need to be able to see the target in order to communicate with (or, at a minimum, to establish the connection with) them.
• Limited recipients: Typically, Limited Telepathy is confined to conversation with a single creature at a time.
• Concentration required: If concentration is required, the telepath may undertake no other physical actions at the same time, or the telepathic connection will be lost.

Unless otherwise stated for a creature entry that includes Limited Telepathy, assume that a noted limitation restricts only that condition, and otherwise functions as Full Telepathy (e.g., "Limited Telepathy: shared language required." would function as Full Telepathy, except the telepath and target(s) must share a language.

Flatiron Building Map as Dungeon Level

 Turned a map from the Flatiron Building in a single-level dungeon with 30 rooms (so I could add a d30 table or two to go with it—to come in a future post).

New Magic Items: Rings I

Earthwhisperer

Description

This heavy, rough-hewn ring is carved from a single chunk of dark deep-earth schist, with veins of lighter quartz running through a mass of grave iron basalt. When held to the ear, a very faint, almost rhythmic thrumming can be heard from within.

Pedigree

Forged by the reclusive geomancers of Stonerise, this ring was intended to give voice to the earth itself. It was said to have been lost when the mountain heart of their stronghold finally collapsed, burying their secrets. Legends whisper it now rests within the deepest, most stable bedrock of Deepstone, speaking only to those who can truly listen. Its last supposed owner was a dwarven delver named Borin Stonehand, who vanished from historical records centuries ago.

Abilities

Stone's Echo (Constant): Wearer is able to detect the source of even the slightest vibrations, tremors, or sounds originating from within solid earth or stone within 360'.

Earthtongue (Constant): Wearer is able to speak Terran and Primordial.

Speak with Earth (1×/day): Allows the wearer to ask one yes/no question of the immediate surrounding earth (within 30'). The answer manifests as a subtle, guttural rumble felt through the ring, indicating "yes" or "no." This ability cannot be used in areas where the earth is disturbed by active magic or recent, violent geological events.

Meld into Stone (1×/week): As a spell action, the wearer can meld into a solid stone surface large enough to contain their body, as per the spell meld into stone.

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Shadoweaver

Description

This ring appears to be woven from strands of pure shadow, forming a delicate yet unnerving band that seems to absorb light. When worn, it occasionally seems to flicker and subtly distort the air around it, making the wearer's hand appear slightly out of focus.

Pedigree

Woven from the shadow of a forgotten god by a reclusive coven of shadow fey, this ring was designed to grant ultimate stealth and disguise. It is whispered that the coven used it to infiltrate and manipulate mortal kingdoms, their presence never detected. It is now thought to be hidden within the deepest, most lightless part of the Gloomwood, guarded by illusions and misdirection.

Abilities

Shadow Veil (Constant): Wearer is able to Hide in Shadows as a 14th level thief. 

Shadowspeak (Constant): Wearer is able to speak Umbral (the language of Shadow).

Whisper of Deception (1×/day): Allows the wearer to magically influence a creature they can see within range that can hear and understand them, as the spell suggestion. The victim is permitted a save vs. spells to avoid the suggestion.

Flicker (1×/day): As a bonus action, the wearer can teleport into any unoccupied space they can see within 15', provided that both the starting and ending locations are in dim light or darkness. If attempting to teleport into occupied darkness, the attempt fails, but the use for the day remains. The wearer can only make one such attempt in any single round.

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Ironheart

Description

This ring is a thick, seamless band of dark, pitted iron, unadorned by any gemstones or filagree. It is unnaturally heavy, feels cold to the touch, and subtle, rhythmic clicks can sometimes be heard emanating from it, like distant gears turning.

Pedigree

Forged in the Titan's Breath Foundry by the enigmatic Golem Lord Xy'lar, this ring (1 of 10 similar rings infused with raw elemental earth and arcane binding magic) was a key component in animating his most powerful constructs. Though Xy'lar's was defeated during the legendary siege of "Sentinel's Fall," and reportedly dozens of attempts have been made to destroy the ring, it is alleged that the ring has reformed over and over again. 

Abilities

Iron Skin (Constant): The wearer's Armor Class improves by –3, but only if they are not wearing any item that improves AC (i.e., they may not be wearing armor, using a shield, or wearing any other magical items that improve Armor Class). They may, however, benefit from additional spell-based protections.

Repair Minor Constructs (3×/day): As a melee action, the wearer can touch any damaged golem with 10 or fewer Hit Dice and restore 1d6 hit points to it.

Will of Iron (1×/day): As a spell action, the wearer can attempt to exert control over golem with 10 or fewer Hit Dice within 30'. The golem must make a successful save vs. spells or be charmed by the wearer for 1 minute. Control will be lost if the golem moves beyond the 30' range of the ability.

Side Effects

Prolonged wearing of this ring causes the wearer's flesh to undergo ferrous induration. Over time, their skin hardens and stiffens into iron, making movement difficult, eventually risking total siderification (an iron-based type of petrification). For each month of considerable wear (average of 8 hours a day or more), the wearer must make a save vs. paralysis. On each failed save, the wearer's Dexterity will decrease by 1 point, their Armor Class will improve by –1 point (this bonus is in addition to any adjustments to AC from a change in Dexterity), their their speed will decrease by 15'(5') to a minimum of 15'(5'), andd their initiative adjustment will decrease by –1 (if using individual initiative). After even a single failed save, they will be forced to always strike last during the combat round. Furthermore, if their Dexterity is reduced to 0 or less, they will become permanent siderified. This condition may be reversed by the 7th level MU spell iron to flesh. This spell will not negate the curse of the ring itself, nor will it negate any side effects the wearer might incur by continuing to wear the ring.