Apocalisps-svaret ger en bra länk och några bra förslag. Jag skulle vilja ge ytterligare material som har hjälpt mig enormt tidigare:
Dessa två länkar är speciellt bra för att förklara de system du vill spela med:
Även om dessa blogginlägg huvudsakligen är inriktade på homebrewing från början, innehåller de en utmärkt uppdelning av balansen på 5e. Även om du inte gör dina egna monster, kommer den här analysen att hjälpa dig att få en känsla för utmaningsklassificering och monster / möte svårigheter. Att veta matematiken bakom fluffen låter dig spela med dessa saker utan att bryta systemet.
För att undvika att kopiera klistra hela avhandlingen, här är ett sammanfattande citat från slutet av Monster Building 201:
... you have NO CONTROL over proficiency bonus. It is determined entirely by the Challenge. And it is always added to certain things. [...] Challenge should be the first thing you pick. Because Challenge also tells you where the HP, AC, Damage, and Attack Bonus have to fall. So you pick your Challenge with care.
BUT, now you also understand that Challenge has two components. Offensive and Defensive. And Offensive Challenge starts with Damage and then is modified by Attack and Save DC. And Defensive Challenge starts with Hit Points and then is modified by Armor Class.
[...]
MOREOVER, you also understand what you CAN Tweak. You have the LEAST control over Attack Bonus. Why? Because it’s mostly Proficiency Modifier and if you tweak the Ability Modifier, you’re also f$&%ing with the Damage. And maybe the Armor Class if the creature is using a Finesse attack and the equivalent of light armor (natural or artificial). With manufactured weapons, you trade damage for potential Armor Class as well. Two-handed weapons do the most damage but they cost you a shield.
MEANWHILE, traits, special abilities, even movement modes affect the Challenge of the creature. Which means you’ve got to take them into account. Giving a monster Nimble Escape seems like a neat way to make an assassin, but remember that creature is boosting its Armor Class and Attack Bonus by hiding every round. And that means, overall, the Challenge of the creature is two levels higher than you think it is. And now you should be able to figure out why I can say that so absolutely. Nimble Attack [sic] outright increases the Challenge of any creature by two levels. Every time. Work it out. Check DMG 281 and think through the numbers.