Special ranged weapons used by Powderjacks — thrown as an Attack Action, rolling one Attack Trial (2d10 + Agility + Prowess) against each affected creature’s relevant DR. Damage and effects vary by the specific Bomb formula used; see /professions/knaves/powderjack/concoctions/ (7 Bomb entries).
Still marked draft, partially but not fully resolved now that Powderjack has landed (2026-07-09): the damage: varies placeholder is now a confirmed real field (“per formula + Ego modifier,” matching the Powderjack overview’s own Bomb table exactly), not an unexplained stub. But Weight, Encumbrance, and Traits remain genuinely unspecified in every source checked — unlike all 25 other weapons in this compendium, which all carry real numbers for both. Neither the live Notion Concoctions database nor the local cross-check doc gives a Bomb physical weight, and the general Concoctions rule (“all Concoctions occupy 1 inventory slot”) may be standing in for Weight/Enc entirely rather than this being an oversight — that reading isn’t confirmed. See design/open-questions.md.