Session Zero
Before starting the campaign, hold a session zero to establish tone, safety tools, and expectations.
Tone: Cosmic mystery, high-stakes exploration, and moral choices. Expect astral travel, ancient puzzles, and battles against forces that bend space and mind. The campaign has elements of cosmic horror, but the heroes can make a difference.
Safety Tools: Use the X-card, lines and veils, or another safety tool. Discuss boundaries around horror, madness, and body horror. The Far Realm can be disturbing; ensure players are comfortable.
Character Creation: Start at level 5. Use the standard array or point buy. Recommended party: at least one martial (fighter, rogue, barbarian), one divine or primal caster (cleric, druid), one arcane caster (wizard, sorcerer, warlock), and one support (bard, paladin). Skills: Arcana, History, Investigation, Perception. A character with Astral or Planar knowledge is helpful.
Backstories: Encourage players to tie their characters to the Astral Plane, the Cartographers, or Veyron. Maybe one character is a descendant of a Cartographer, or has a vision of the Far Realm.
Expectations: The campaign is 12–15 sessions. Milestones will be used for leveling. The party will face difficult choices; not all outcomes are happy. The Horizon Needle is a powerful artifact with a will of its own.
Table Rules: Establish rules for scheduling, attendance, and player conduct. Discuss how to handle player vs. player conflict and character death.