undefined — Dungeon Master's Screen: Spelljammer

Setting a DC
Difficulty	DC	Difficulty	DC
Very easy	5	Hard	20
Easy	10	Very hard	25
Moderate	15	Nearly impossible	30

Skills and Associated Abilities
Skill	Ability	Skill	Ability
Acrobatics	Dexterity	Medicine	Wisdom
Animal Handling	Wisdom	Nature	Intelligence
Arcana	Intelligence	Perception	Wisdom
Athletics	Strength	Performance	Charisma
Deception	Charisma	Persuasion	Charisma
History	Intelligence	Religion	Intelligence
Insight	Wisdom	Sleight of Hand	Dexterity
Intimidation	Charisma	Stealth	Dexterity
Investigation	Intelligence	Survival	Wisdom

Suffocating

You can hold your breath for a number of minutes equal to 1 + your Constitution modifier (minimum of 30 seconds).

If you run out of breath or you're choking, you can survive for a number of rounds equal to your Constitution modifier (minimum of 1 round). At the start of your next turn, you drop to 0 hit points and are dying, and you can't regain hit points or be stabilized until you can breathe again.

Weightlessness

In any location where gravity is not present, the following rules apply:

Impeded Melee

When making a melee attack with a weapon, a creature that doesn't have a flying or swimming speed (either naturally or provided by magic) has disadvantage on the attack roll unless the weapon deals piercing damage.

Movement

A creature can use an action to push off something heavier than itself and move up to its walking, flying, or swimming speed in a straight line. The creature continues along this course, moving in a straight line at its speed on each of its turns until something stops it or changes its trajectory.

Astral Encounters

You can generate a random encounter on the Astral Plane by rolling on either the Wildspace Encounters table or the Astral Sea Encounters table, as appropriate, or by choosing an encounter you like. If the encounter is with a spelljamming ship, you can roll on the Ship Encounters to determine the ship and its crew, or you can create a ship encounter of your own (see the Astral Adventurer's Guide for 2).

Creatures marked with an asterisk (*) appear in this book; the rest are described in the Monster Manual. Any creature marked with a dagger (†) can serve as a spelljammer because it is a spellcaster.

If a Humanoid has no specified race, it can be of any race you choose.

Initial Attitude

To randomly determine the initial attitude of the creatures encountered, make the attitude roll called for in an encounter table entry, then refer to the appropriate line of the Initial Attitude table.

Initial Attitude
Attitude Roll Total	Initial Attitude
4 or lower	Hostile
5–8	Indifferent
9 or higher	Friendly

Wildspace Encounters
d100	Wildspace Encounter	Attitude Roll
01–03	1d4 chwinga astronauts,* each mounted on 1 space guppy*	1d6 + 4
04	1 cosmic horror* (30 percent chance it is asleep)	1d6
05	1 esthetic* piloted by 1 reigar*†	1d12
06–07	1 eye monger*	1d6
08–11	1 feyr*	1d6
12–13	1 giant octopus that has a flying speed of 60 feet and doesn't need to breathe air	1d10
14–17	1d6 jammer leeches*	1d8
18–23	1d4 kindori*	1d6 + 3
24–25	1 kindori* with 1 druid† living in a hut on its back	2d6 + 3
26	1 kraken that has a flying speed of 60 feet and doesn't need to breathe air	1d6
27	1 lunar dragon* (your choice of young, adult, or ancient)	1d10
28–35	A tavern or inn built on an asteroid, with docks where ships can berth	—
36–39	1d6 murder comets*	1d6
40–44	1d4 brown scavvers*	1d8
45–48	1 night scavver* and 2d6 gray scavvers*	1d8
49–50	1 void scavver*	1d6
51–52	A shipwreck that might still have treasure or creatures aboard it (choose a ship from 2 of the Astral Adventurer's Guide)	—
53–54	1 solar dragon* (your choice of young, adult, or ancient)	2d6
55–59	1d6 space eels*	1d10
60	1 starlight apparition*	2d6 + 2
61–64	3d6 stirges that don't need to breathe air	1d6
65–70	1d6 will-o'-wisps	1d10
71–00	1 spelljamming ship (roll on the 0)	—

Astral Sea Encounters
d100	Astral Sea Encounter	Attitude Roll
01–02	1 aartuk starhorror† and 2d4 aartuk weedlings	1d12
03–09	1 archmage† using the astral projection spell	1d10 + 3
10–11	1 braxat*	1d8
12	1 cosmic horror* (70 percent chance it is asleep)	1d6
13–15	1d4 devas† on a divine errand	1d12 + 3
16–28	1 githyanki knight† and 1d6 githyanki warriors†	1d10
29–31	1 githyanki knight† mounted on a young red dragon	1d8
32	1 githzerai zerth† being hunted by githyanki	1d6 + 6
33–38	1d4 kindori*	1d6 + 3
39	1 mercane*† and 1 beholder bodyguard	1d8 + 4
40	1 neh-thalggu*† looking for a portal to the Far Realm	1d10
41–42	1 pentadrone	1d6 + 3
43–44	1 planetar† from a nearby astral dominion	1d12 + 3
45–47	2d4 psurlons*†	1d8
48–50	Gargantuan floating crystal obelisk of mysterious origin	—
51–52	4d4 quadrones	1d6 + 3
53	1 monodrone that has gone rogue	2d6 + 3
54–56	1d4 gray slaadi† in Humanoid form	1d10
57–58	1 green slaad†	1d12
59–63	3d6 gray scavvers*	1d8
64	1 solar† watching over a dead god that drifts nearby	1d12 + 3
65–66	1 solar dragon* (your choice of young, adult, or ancient)	2d6
67	1 starlight apparition*	2d6 + 2
68–70	1d8 unicorns galloping merrily across the Astral Sea	1d6 + 6
71–00	1 spelljamming ship (roll on the Ship Encounters table)	—

Ship Encounters
d100	Ship Encounter	Attitude Roll
01–07	Bombard Leviathan, captained by Myrtle Hunt (giff warlord) and crewed by 8 giff shipmates and 3 mages†	1d10 + 2
08–16	Damselfly ship Voidwinder, captained by Krig Kalu (hadozee explorer) and crewed by 1 drow† and 7 hadozee shipmates	2d6 + 3
17–23	Flying fish ship Horizon, captained by Thaal Vod (renegade mind flayer arcanist†) and crewed by 9 plasmoid warriors*	1d12
24–31	Hammerhead ship Jander Sunstar, captained by Veluna Valderak (vampirate captain) and crewed by 13 vampirates and 1 priest†	1d12
32–36	Lamprey ship Astral Prize, crewed by 15 psurlon ringers,*† including Captain Uscath	1d12
37–39	Living ship Eldervine, captained by Queth (aartuk elder) and crewed by 2 aartuk starhorrors,† 8 aartuk weedlings,* and Eldervine (treant)	1d10
40–45	Nautiloid Neurophage, crewed by 4 mind flayers† and 16 kuo-toa, with 1d6 grells and 1d6 intellect devourers as passengers	1d6
46–50	Nightspider Malevolence, captained by Yeshk (neogi void hunter†) and crewed by 24 neogi pirates and 5 umber hulks	1d6
51–55	Scorpion ship Claws of Huraj, captained by Huraj (hobgoblin captain) and crewed by 1 bugbear (first mate), 8 hobgoblins, and 2 hobgoblin priests†	1d12
56–61	Shrike ship Fedifensor, captained by Yaj (githyanki xenomancer†) and crewed by 10 githyanki buccaneers†	1d12
62–66	Space galleon Eleventh, captained by Xorpha Eleven-Eyes (beholder) and crewed by 1 spectator (first mate), 3 cult fanatics,† and 16 cultists	1d12
67–72	Space galleon Great Kindori, captained by Mystan the Mighty (djinni†) and crewed by 1 invisible stalker (first mate), 1 couatl,† 17 aarakocra, and 1 rug of smothering	2d6 + 2
73–78	Squid ship Syken's Reach, captained by the pirate Arviglas Syken (human bandit captain) and crewed by 1 cambion† (Syken's daughter, Tenebra) and 11 thugs	1d12
79–84	Star moth Apex, captained by Xaleen (astral elf commander†) and crewed by 11 astral elf warriors and 1 astral elf aristocrat*†	1d12
85–90	Turtle ship Snorkel, captained by Shelby Norkel (gnome mage†) and crewed by 15 autognomes*	1d10 + 3
91–94	Tyrant ship Doomdreamer, crewed by 2d4 + 2 beholders	1d8
95–00	Wasp ship Adventure, abandoned and adrift (25 percent chance that its spelljamming helm is still aboard)	—

Ship-to-Ship Starting Distance

At the start of an engagement, the DM decides how far a ship is from its enemies. Three possibilities are provided in the Starting Encounter Distance table. The shorter the distance, the less time crews have to load weapons and make other preparations.

Distance	Notes
250 feet	Long range for ballistae, mangonels, shortbows, longbows, light crossbows, and heavy crossbows
500 feet	Long range for longbows and mangonels; beyond the range of ballistae and crossbows
1,000 feet	Beyond the range of most ranged weapons

Crashing

When a spelljamming ship crashes into a creature or an object that could reasonably damage it, both the ship and the creature or object it struck take bludgeoning damage based on the size of the struck object, as shown in the table below.

Size of Creature or Object Struck	Bludgeoning Damage
Large	4d10
Huge	8d10
Gargantuan	16d10

If the ship runs into something that doesn't have hit points (such as a planet or a moon), apply the damage only to the ship. The ship stops after crashing into a Gargantuan or immovable creature or object; otherwise, the ship can continue moving if it has any movement left, and whatever it struck moves to the nearest unoccupied space that isn't in the ship's path.

Shipboard Tasks

During the uneventful part of a voyage, the captain of a spelljamming ship can put crew members to work in several ways. If a character is looking for a job to do, or if a captain wants to keep a character busy, roll on the Shipboard Tasks table to determine what needs to be done. The time it takes to complete a task is at least 1 hour, and certain tasks might take longer at your discretion.

Shipboard Tasks
d12	Task
1	Scrape barnacles off the hull.
2	Scrub pots and dishes in the galley.
3	Chop vegetables in the galley.
4	Swab the deck or sweep the cargo hold.
5	Update the ship's navigational charts, which requires cartographer's tools.
6	Repair the captain's favorite pair of boots, which requires cobbler's tools. (A mending spell also does the trick.)
7	Repair superficial damage to the ship, which requires carpenter's tools or woodcarver's tools. (A mending spell also does the trick.)
8	Compose a new chantey, which requires a musical instrument.
9	Entertain the crew with tall tales or gossip.
10	Fix the captain's broken spyglass, which requires jeweler's tools or tinker's tools. (A mending spell also does the trick.)
11	Teach the captain the basics of a language they don't already know.
12	Prepare a tasty dinner for the captain's table, which requires cook's utensils.

Ship Quirks

Roll on the Ship Quirks table if you want to add a bit of "personality" to a ship.

Ship Quirks
d10	Quirk
1	A chatty but harmless spirit haunts the cargo hold.
2	The excessive creaking of the hull echoes throughout the ship.
3	Any creature that removes itself from the ship's spelljamming helm receives a startling but harmless magical shock.
4	The ship's companionways are smaller than those found in most other similar vessels.
5	The ship makes a groaning sound in what seems like defiance whenever it comes to a stop.
6	The floor of the main deck is adorned with a stylized rendering of a mysterious star chart that pulsates occasionally with scintillating colors.
7	The ship's air envelope has a salty, briny smell.
8	Bulkheads throughout the ship have lines of poetry scrawled on them.
9	Unattended tools often go missing, only to reappear 1d4 hours later in another part of the ship.
10	A creature seated in the ship's spelljamming helm hears faint spacefaring chanteys in its mind except when the ship is under attack.

Ship Cargo

To randomly determine what's in the cargo hold of a spelljamming ship, roll 1d6 times on the Cheap Cargo table and 1d4-1 times on the Expensive Cargo table. A duplicate result indicates that the ship has more of the same cargo.

If a cargo container is locked, at least one crew member (typically the captain) has the key to it. A character can try to unlock a container using thieves' tools, doing so with a successful DC 20 Dexterity check.

Cheap Cargo
d12	Cargo
1	Trunk containing ten outfits of traveler's clothes (2 gp each)
2	Crate containing one hundred bars of soap (2 cp each)
3	Twenty ballista bolts (5 gp each)
4	Coop containing fifty live chickens (2 cp each)
5	Crate containing twenty wheels of cheese (5 sp each)
6	Locked cage containing one friendly Beast of your choice
7	Ten 40-gallon barrels of fresh water
8	Ten crates, each containing fifty days of rations (25 gp per crate)
9	Locked cage containing one hostile Beast of your choice
10	Chest containing fifty vials of perfume (2 gp each)
11	Crate containing fifty loaves of bread (2 cp each)
12	Ten 40-gallon barrels of ale (4 gp each)

Expensive Cargo
d12	Cargo
1	Crate containing fifty blank spellbooks (50 gp each)
2	Crate containing one hundred 1-ounce bottles of ink (10 gp each) and one thousand sheets of parchment (1 sp each)
3	Crate containing twenty potions of healing, flasks of alchemist's fire, or vials of antitoxin (50 gp each)
4	Crate containing one hundred bottles of exquisite wine (25 gp each)
5	Set of exquisitely crafted furniture (2,500 gp)
6	Locked trunk containing five unloaded pistols (250 gp each) and a box of 100 bullets
7	Locked case containing an exquisite Dragonchess set made of crystal or ivory (2,500 gp)
8	Locked trunk containing ten bombs (150 gp each; see "9" in the Dungeon Master's Guide)
9	Crate containing one hundred fireworks (25 gp each)
10	Crate containing five unloaded muskets (500 gp each) and a box of 100 bullets
11	Locked case containing five spyglasses (1,000 gp each)
12	Ten 20-pound kegs of gunpowder (250 gp each; see "9" in the Dungeon Master's Guide)