#Gamemastery
If your game is going to have a long-winded "Principles of Play" section, of course the GM needs one too.

(Standard disclaimer: first draft, all text subject to change, typos are deliberate unless they're not.)
September 20, 2026 at 11:34 PM
Speak With Haunt
You stir a haunt (Pathfinder RPG GameMastery Guide 242) to a limited sense of awareness and consciousness, allowing it to answer questions. The spell's range must reach any square within 10 feet of the haunt's area. You must be aware of the haunt prior to casting the spell, and
September 11, 2026 at 3:06 AM
Sense Madness
You can sense the presence of mental disturbance in creatures within range, focusing your detection on one creature each round. If the target is currently suffering from any form of madness (see page 182) or addiction (GameMastery Guide 236), has total sanity damage greater than or
August 27, 2026 at 9:06 PM
It's not a "Miss" - their opponent used their armor to reflect the arrow.

It's not a "Miss" - attack was redirected by a party

It's not a "Miss" - they only struck fat instead of muscle

Your players are competent martials and practitioners; Help them feel like it.

#ttrpg #gamemastery
August 19, 2026 at 5:47 PM
Rotgut
You transform the target into a cheap alcohol of your choice, such as beer, grog, mead, rum, or wine. The alcohol doesn't taste good, but it's drinkable and just as effective as normal alcohol in making creatures inebriated (Pathfinder RPG GameMastery Guide 237). This spell doesn't work on
August 19, 2026 at 5:01 PM
penalties to your actions for being drunk (GameMastery Guide 237). Magical and alchemical methods (such as detect poison) still detect you as inebriated. Time spent under the effect of this panacea do not count toward the time necessary to sober up (it merely delays your intoxication). Tenacity:
July 31, 2026 at 4:56 PM
It's re-listing day, so this is your weekly reminder that I have stuff for sale on eBay! AD&D and 3rd Ed., Pathfinder Gamemastery and 3rd Ed/1e, plus misc. Palladium, Feng Shui 1e, and Chivalry & Sorcery. Check it out or share with a friend who collects! www.ebay.ca/usr/brenjan0
brenjan0 on eBay
Follow brenjan0 on eBay. Buying, Selling, Collecting on eBay has never been more exciting!
www.ebay.ca
July 19, 2026 at 5:48 PM
I like Angry GM a lot. Gamemastery 101 at The Alexandrian is also very helpful. And while The Lazy Dungeon Master didn't help me personally with D&D, I'll probably revisit it now that I'm up to my ears in Daggerheart.

Is that the kind of thing you meant?
July 5, 2026 at 4:23 PM
Are you looking for things to have your party encounter in the hills that aren't necessarily trying to kill them? Look no further than the Lich's Library! #gamemastery #ttrpgs #random #encounters
Hill Random Encounters
What is a hill? They take so many forms that if you were to say "We went into the hills for three days," the collocutor could be forgiven f...
the-lichs-library.blogspot.com
July 1, 2026 at 3:09 PM
Maybe my proudest auction win yet is this collection of #pathfinder books, including both Bestiary books, the Gamemastery Guide, and a bunch of Lost Omens guidebooks. So excited to dive into this world! #ttrpg
June 22, 2026 at 2:33 PM
I started a blog! Check out my first posts, including session reports from my Stonehell Megadungeon game and thoughts on getting an online game up and running!
the-lichs-library.blogspot.com
#dnd #rpg #new-blog
The Lich's Library
RPG commentary, session reports, and gamemastery tips and tutorials.
the-lichs-library.blogspot.com
June 9, 2026 at 11:46 AM
Horrifying Visage
You channel residual feelings of terror into the minds of creatures within the area, causing those fears to manifest when confronted with a specific object. All creatures in the area must succeed at a Will save or acquire a phobia (Pathfinder RPG GameMastery Guide 250) for the
June 8, 2026 at 6:57 PM
I own almost all of those, many of them bought with the GAMEMASTERY branding! I have over 100 Flip-Mats. Such a good product, and people should buy yours!

I know I'm asking the wrong Jason, but why do so many of the dungeon/Darklands maps have majority or all 5-foot corridors? It's so AD&D1E!
April 13, 2026 at 7:50 PM
DC listed in the common versions of the drug. For more information, see Drugs and Addiction on page 236 of the Pathfinder RPG GameMastery Guide. As a special use of this spell, a lawful evil worshiper of Mahathallah, the Dowager of Illusions, can create doses of the drug adyton (see the sidebar
April 8, 2026 at 7:16 PM
at the normal rate in your demiplane. By selecting this feature, you may make your plane have the erratic time, flowing time (half or double normal time), or timeless trait (see Time, GameMastery Guide 185). You can make this spell permanent with the permanency spell, at a cost of 22,500 gp. If you
April 8, 2026 at 3:17 PM
magic, impeded magic, or wild magic planar trait (see Magic Traits, GameMastery Guide 187). If you selected dead magic, you are trapped within your plane unless it has a permanent planar portal (such as the portal feature, below). If you selected enhanced or impeded magic, choose one type of magic
April 8, 2026 at 3:16 PM
instantaneous duration. Energy: Your plane gains the (minor) negative- or positivedominant energy trait (see Elemental and Energy Traits, GameMastery Guide 186). A plane cannot have both the negative-dominant and positive-dominant energy traits. Magic: Your plane gains the dead magic, enhanced
April 8, 2026 at 3:16 PM
self-contained so it loops upon itself when a creature reaches one edge (see Shape and Size, GameMastery Guide 185). You may designate areas or locations on the edges of your plane where this occurs (such as a pair of secret doors or a path in the woods) or apply it to the entire plane. Structure:
April 8, 2026 at 1:17 PM
most creatures are used to on the Material Plane. By selecting this feature, the plane's gravity is heavy, light, none, objectively directional, or subjectively directional (see Gravity, GameMastery Guide 184). Seasonal: The demiplane has a seasonal cycle and a light cycle, usually similar to those
April 8, 2026 at 1:17 PM
plants adapted to near-darkness or underground locations. Elemental: Your plane gains the air-, earth-, fire-, or water-elemental dominant trait (see Elemental and Energy Traits, GameMastery Guide 186). Gravity: By default a demiplane's gravity is normal and oriented in one direction, like what
April 8, 2026 at 1:17 PM
evil-, law-, or neutral-aligned alignment trait (see Alignment Traits, GameMastery Guide 187). You cannot give your demiplane an alignment trait for an alignment you do not have. Bountiful: Your demiplane gains a thriving natural ecology, with streams, ponds, waterfalls, and plants. The demiplane
April 8, 2026 at 1:17 PM
☕️ The PhD20 community is our “coffee shop” for discussing gamemastery, worldbuilding, and all things #TTRPG like (but not limited to) #DnD. This is a community for TTRPGs and the gamers that love them. All aspects of the hobby are welcome.

forum.phd20.com/t/welcome-to...
Welcome to PhD20! 👋
☕ The PhD20 community is our “coffee shop” for discussing gamemastery, worldbuilding, and all things tabletop roleplaying games like (but not limited to) Dungeons & Dragons. This is a community for…
forum.phd20.com
February 22, 2026 at 5:20 PM
TIL that Pathfinder has DID as an effect of "insanity".
February 21, 2026 at 4:57 AM