Chapter 1 - Dungeon Master's Screen: Spelljammer

Very easy 5 Hard 20 Easy 10 Very hard 25 Moderate 15 Nearly impossible 30 Setting a DC 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 Skills and Associated Abilities 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 ship descriptions). Creatures marked with an asteris...