Rules reference
The 5e SRD rules the engine uses for checks, combat, and spells.
Ability Scores
The six ability scores, how modifiers are calculated, and saving throws.
Skills
All 18 D&D 5e skills, their governing ability scores, and when they're used.
Combat
Initiative, turn structure, attacks, damage, conditions, and death saving throws.
Conditions
All 15 D&D 5e SRD conditions and their mechanical effects.
Spells & Spell Slots
How spells work — cantrips, spell levels, slots, components, concentration, and casting.
Classes
All 12 D&D 5e SRD classes — hit dice, primary ability, armor, and key features.
Races
Playable SRD races — ability score increases, traits, and which classes they complement.