https://www.youtube.com/watch?v=jT3FRzEJDp8

Dungeon Master

• sets the scene
• creates obstacles/adventures
• adapts to player actions

Set the scene

• You are ...
• Your obective

Movement/Attacks

Roll

• Roll die and add modifier

Difficulty Check

All checks have a Difficulty Checks which must be exceeded to pass.

When the DM decides on a DC, we may use this table as a reference.

Skill Check

• Insight  - Decide if someone is speaking the truth
• Stealth 
• Intimidation

Saving Throws

• Dexterity saving throw - quickness and agility

Attack

• Must get higher than AC (Armour Class)
• Die roll plus attack bonus
• Calculate damage using weapon stats

Range Attacks

• Make sure you are within range (ie. short bow has a range of 120')

Combat Round Sequence

• Is anyone surprised?
• Everyone rolls initiative (1d20 + initiative total [based on dexterity modifier] )
• DM puts everyone in initiative order
• In initiative order, everyone takes a turn. Surprised creatures can't take any action for the first round.

Turn consists of 

• movement 
• action (attack, cast a spell, dash, disengage, dodge, help, hide, ready, search, use an object)
• additional actions based on class features

Critical Hit

• Roll 20
• Some may have lower die roll for critical hit
• always hits
• double base damage + modifier  (normal 1d6+2, roll 4 - damage 4x2+2 = 10)

When HP =0 

• monster is dead
• Ask player how you kill this monster

Death Saves

• Players who loose all hit points would not necessarily die. They would be knocked down...
• See death saves

Spells

Players with spell casting abilities will have a known number of spells and will have to prepare a number of spells every day.

Known Spells

Prepared spells:

Example:

Ritual Spells do not have to be prepared.

Cantrip spells can be cast at any time without being prepared.

References