(Fastplay) Knowledge

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Knowledge
    Restriction: you cannot retry
    Restriction: you cannot use untrained when DC is higher than 10 unless you have a topic-specific library
    DC Base: 10 (easy questions)
    DC Base: 15 (basic questions)
    DC Base: 20-30 (really tough questions)
    Check Frequency: per question
    Time: GM discretion
    Time: 1d4 hours when using a topic-specific library
Monster Knowledge (identify monsters and their powers)
    DC Base: 10 + the monster's CR (common monsters)
    DC Base: 15 + the monster's CR (rare monsters)
    Success: you recall 1 piece of useful information + 1 piece of useful information for each 5 points over the DC
    Failure: you don't recall any information about the monster
Specific Knowledge (Arcana)
    DC Base: 15 + spell level (identify auras while using detect magic)
    DC Base: 20 + spell level (identify a spell effect that is in place)
    DC Base: 20 + spell level (identify materials manufactured by magic)
    DC Base: 25 + spell level (identify a spell that just targeted you)
    DC Base: 20    Identify the spells cast using a specific material component
Specific Knowledge (Dungeoneering)
    DC Base: 15 + hazard’s CR (identify underground hazard)
    DC Base: 10 (identify mineral, stone, or metal)
    DC Base: 15 (determine slope)
    DC Base: 20 (determine depth underground)
Specific Knowledge (Engineering)
    DC Base: 10 (identify dangerous construction)
    DC Base: 15 (determine structure’s style or age)
    DC Base: 20 (determine a structure’s weakness)
Specific Knowledge (Geography)
    DC Base: 10 (identify a creature’s ethnicity or accent)
    DC Base: 15 (recognize regional terrain features)
    DC Base: 20 (know location of nearest community or noteworthy site)
Specific Knowledge (History)
    DC Base: 10 (know recent or historically significant event)
    DC Base: 15 (determine approximate date of a specific event)
    DC Base: 20 (know obscure or ancient historical event)
Specific Knowledge (Local)
    DC Base: 10 (know local laws, rulers, and popular locations)
    DC Base: 15 (know a common rumor or local tradition)
    DC Base: 20 (know hidden organizations, rulers, and locations)
Specific Knowledge (Nature)
    DC Base: 15 + hazard’s CR (identify natural hazard)
    DC Base: 10 (identify a common plant or animal)
    DC Base: 15 (identify unnatural weather phenomenon)
    DC Base: 20 (determine artificial natural of feature)
Specific Knowledge (Nobility)
    DC Base: 10 (know current rulers and their symbol)
    DC Base: 15 (know proper etiquette)
    DC Base: 20 (know line of succession)
Specific Knowledge (Planes)
    DC Base: 10 (know the names of the planes)
    DC Base: 15 (recognize current plane)
    DC Base: 20 (identify a creature’s planar origin)
Specific Knowledge (Religion)
    DC Base: 10 (recognize a common deity’s symbol or clergy)
    DC Base: 15 (know common mythology and tenets)
    DC Base: 20 (recognize an obscure deity’s symbol or clergy)
Final Notes
    Bonus In: +2 favored enemy
    D20: Knowledge