Improvising Ability Checks
Some adventures includes encounters that require the Game Master to improvise an ability check. This should be a helpful reminder.
All ability checks should be phrased like this:
DEXTERITY (Stealth) of [NUMBER TO BEAT] or higher. You, the Game Master, get to pick the [NUMBER TO BEAT] depending on how difficult you want to make it. Or, use the number from a DnD Adventure Club adventure.
10 or higher is average
15 or higher is hard
20 or higher is nearly impossible
Step 01: Have the player roll a d20
Step 02: Add their ability bonus. If they have the appropriate skill, add that bonus instead.
Step 03: Compare the total of the player roll to your NUMBER TO BEAT. If the player matches your number or higher, they succeed.