4th Edition Combat Crib Sheet

Initiative

• Each player rolls 1 D20
• Add one half your level
• Add your Dexterity modifier
• Add any bonuses and penalties that apply

Surprise

• Players attempt to surprise enemy combatants or vice versa
• Determine via Sneak Attack or Perception Check
• If successful, they attack in initiative order for 1 round
• Standard action OR move action OR minor actions allowed
• Spending of action points not allowed
• Surprised combatants do not act

Combat Turn:

Start of your turn

• Ongoing damage and regeneration
• End some effects, as specified

Standard Action (Do one of the following)

• Basic Attack
• Use a Standard Action power
• Charge (move at least 2 and up to your move and attack at +1, no other actions afterwards)
• Second Wind (spend healing surge and regain hp, get +2 to all defenses until start of next turn - usable only once per encounter
• Substitute a Move or a Minor Action
• Perform a somewhat complicated task (administering a potion to a fellow character, making a heal check, etc.)

Move Action (Do one of the following)

• Walk (move up to your speed)
• Shift (1 square without provoking an Opportunity Attack - can't move into difficult terrain)
• Run (your speed +2, grants Combat Advantage)
• Some skill checks (acrobatics, stealth, etc) cost some or all of your movement
• Substitute a Minor Action

Minor Action (Do one of the following)

• Draw a weapon
• Close a door
• Open an unlocked chest
• Use a Minor Action Power
• Sustain a power that allows it
• Other actions as allowed by the DM

Free Actions(Do as many as you like, within reason or as allowed by the DM)

• Talking, dropping stuff, etc.
• Can be performed during other combatant's turns as well

Use Action Point

• See action points below

Other Combatants' Actions

• Other combatants may take free actions
• Other combatants may take immediate actions that you trigger
• Other combatants may take opportunity actions

End of your turn

• Make Saving Throws for some ongoing effects. Roll 1d20 (10 or higher breaks it, 9 or lower, it continues).
• End some effects, as specified

Action Points

Most often spent to take a single extra action during your turn.

• You start with one per day. After an Extended Rest (which can only be done once per day), you reset back to one.
• More can be gained through adventuring and acts of heroism, per your DM.
• Can only be used once per encounter.

Combat Advantage

All opponents with Combat Advantage against you gain +2 bonus to their attack if they have line of sight (see chart above).

• Granted to flankers when combatant is flanked (opposite squares).
• Granted when combatant is stunned or blind and other effects.
• Granted to adjacent melee attackers when prone.

Critical hits

• A rolled natural 20 (unmodified by bonuses) always hits your opponent.
• If the modified result is enough to hit your opponent's AC, it automatically deals the maximum amount of damage plus any bonus granted by the weapon used (this bonus damage is rolled normally).

Dying

When your current hit points drop to half your maximum, you are bloodied. This affects some powers. When your current hit points drop to zero or lower, you fall unconscious and are dying.

• Make a saving throw each round. 3 failed saves (not necessarily in a row) result in death. A fellow PC may be able to heal or stabilize you, preventing you from having to make any more.
• If your hit points reach a negative number equal to half your maximum, you die.

Immediate Actions

Occur on other combatant's turns.

• Come in two flavors: Interrupts and Reactions, as defined by the power.
• You can only take one Immediate Action between your turns.

Opportunity Actions

Sometimes you get to act on another combatant's turn, as specified below:

• Attack triggered when opponent leaves a square adjacent to you.
• Attack triggered when adjacent enemy makes a Ranged or Area attack (unlike spells and other Powers designated as Close).
• Can only use a melee basic attack, not a power (unless the power says it can be used as a basic attack).
• Can only take one Opportunity Action on each combatant's turn.
• Interrupts (happens before, but does not necessarily negate) the action that triggered it.