Cover

Cover provides bonuses to AC and Dexterity saving throws. Understanding cover rules adds tactical depth to combat.

Types of Cover

Cover is determined by obstacles between you and the attacker. There are three levels:

Cover TypeAC BonusDex Save BonusExample
Half Cover+2+2Low wall, furniture, another creature
Three-Quarters+5+5Portcullis, arrow slit, thick tree
Total CoverCan't be targetedCompletely concealed

Total Cover: You can't be targeted directly by attacks or spells that require you to be seen. Area effects may still reach you.

Determining Cover

The Line Method:

  • Draw a line from any corner of the attacker's space to any corner of the target's space
  • If the line passes through an obstacle, the target has cover
  • If it passes through another creature, half cover at minimum

Creatures as Cover:

  • A creature provides half cover to targets behind it
  • This applies to allies and enemies
  • Smart positioning uses this

DM Judgment:

  • DM determines cover based on the situation
  • Partial obstruction = half cover
  • Mostly blocked = three-quarters
  • Completely blocked = total cover

Using Cover Tactically

Ranged Combat:

  • Archers should fight from behind cover
  • Step out, attack, step back behind cover
  • Windows and arrow slits provide three-quarters cover

Against Spells:

  • Cover helps against Dex save spells (Fireball, Lightning Bolt)
  • Total cover blocks line-of-sight spells entirely
  • Some spells can curve around cover

Creating Cover:

  • Flip tables for half cover
  • Wall spells create cover
  • Pile up bodies (grim but effective)

Common Mistakes

Common Mistake
Forgetting cover applies to Dex saves too
Common Mistake
Not using other creatures as cover
Common Mistake
Forgetting ranged attackers can have cover too
Common Mistake
Thinking total cover blocks all spell effects (area spells still work)

DM Tips

DM Tip
Describe terrain that provides cover
DM Tip
Smart enemies use cover extensively
DM Tip
+5 AC from three-quarters cover is huge
DM Tip
Cover creates dynamic, tactical combat