Egg of Binding

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Appearance & Storage

Completed Eggs of Binding appear as oblate or spherical, glossy, grey-green objects about the size of an orange, covered in irregular cracks which reveal a spongy, white material the consistency of marshmallow. The darker “shell” is somewhat brittle in the manner of a “candy” shell, but does not flake off, merely becoming more and more pervaded by the white cracks the more an Egg is handled.

The Egg’s interior chemicals are volatile, and will expand until the item discharges (see below) if exposed to excess heat (above 100 degrees Farenheit). After more than a year in storage, the egg’s fibrous exterior tends to become brittle. Roll 3d when handling eggs older than this. On a 17 or 18, the egg discharges immediately. A successful Alchemy roll can identify such hazardous eggs by sight, but disadvantages like Bad Luck, Klutz, and Weirdness Magnet may cause them to discharge without a roll…


When subject to impact (technically, at least 1 point of Crushing, Cutting, Impaling, Small, Medium, Large, or Huge Piercing, or Burn damage), the white, fibrous glue holding the shell fragments together ruptures explosively, releasing a gluey combination of spider-silk-like threads and Aqua Glutis. This mess coats everything in the area of effect, but does not leave any intervening structure (like a D&D-style Web spell would); it simply wraps and binds thread and adhesive, forcibly, around everything in the area.

Eggs should be thrown using any Throwing skill. They can be built in a variety of sizes (see table below). Any creatures in the area of effect defined are subject to a Binding attack (per the advantage of that name in the Basic Set), using all the rules specified there. Specifically, multiple eggs will not expand the area of effect, but will increase the ST of the effective binding.

Wgt. Size Effect Binding ST Range (ST 10)
1/4 Lb Songbird’s Egg SM-2 2d-1 40 Yards
1/2 Lb Ryph’s Egg 1 Hex 2d+2 35 Yards
1 Lb Grapefruit 3 Hexes (3 Yard Diameter) 3d 25 Yards
2 Lb Small Melon 5 Hexes (5 Yard Diameter) 5d 15 Yards

Eggs of larger than 2 pounds cannot be safely thrown by most people, but can certainly be dropped from walls, flying mounts or vehicles, or fired from catapults (or just thrown by really, really strong characters or creatures).


There is no safe way to neutralize a charged Binding Egg, other than to throw it at an unoccupied hex or group of hexes. Any damage to the Egg itself will simply cause it to discharge prematurely (see above).

The binding fibres and chemicals evaporate after an hour (half that in temperatures over 90 degrees Farenheit). It is possible to create permanent Binding Eggs for double the reagent cost and Aqua Glutis amount listed below. This modification also adds -2 to the Alchemy roll required, and increases all listed Binding ST ratings by +1d. Time remains unchanged.

Removal of the resulting Binding fibres & chemicals (of either type of egg) can be accomplished with 1 ounce of Aqua Vitria (or stronger solvent) per 1/2 lb of Eggs used, per subject (2, 2-lb eggs worth would require 8 ounces, etc.) This amount only frees the subjects, and requires 1 second per ounce to apply hastily (it takes effect immediately). Twice that amount is required to remove all visible traces of the gunk.

Calyx has no effect on Eggs of Binding unless it is mixed in with the contents as they are fermented. If this is done, it has the same effect as on Aqua Glutis. Low- and No-Mana areas cause the Binding fibres & chemicals of permanent-style Eggs of Binding to break down after 8 hours of exposure.


While other materials give the Egg of Binding’s contents their unique properties, the majority of the adhesive property comes from Aqua Glutis, which is required separately. In addition, each size of Egg requires a sturdy, [[Aqua-Vitria]]-treated, cast-iron mold.

  • Time: 1 Day (+24 hours curing time in the mold)
  • Batch: 1, 1/2 lb Egg (Special: do not increase Time for larger Batches, only materials)
  • Containment: A sturdy container in any cool, dry place.
  • Ingredients: $50 in Reagents, plus 1 oz. Aqua Glutis, 1 oz. Aqua Vitria, and a cast-iron mold costing $100 per Egg (regardless of size). Molds can be reused.
  • Market Price: $200 for a 1 lb (temporary) Egg, double for the permanent type, scaled for size
  • Roll(s): Skill or Alchemy-5, plus a further -2 penalty for Permanent-style Eggs. Assumes ready-made Aqua Glutis and Aqua Vitria. An unmodified Blacksmith roll can create the 2 lb molds, but smaller ones require Blacksmith-2.
  • Mishap: 1d hexes around the Alchemist’s lab are subject to the Permanent version of the Egg’s effect. Don’t forget to apply additional Binding ST for the number and size of eggs being cured.

Egg of Binding

Eldritch Dreams orobouros