Opportunity Attacks

You can make an opportunity attack when a hostile creature that you can see moves out of your reach.

Requirements:

• The creature must leave your reach voluntarily
• You must be able to see the creature
• You must have your reaction available
• You must be able to make melee attacks

The Attack:

• Make ONE melee weapon attack
• Uses your reaction
• Interrupts the creature's movement
• Normal attack and damage

Disengage Action:

• Your movement doesn't provoke opportunity attacks for the rest of the turn
• Costs your action (unless you have a feature like Cunning Action)

Forced Movement:

• Being pushed, pulled, or teleported doesn't provoke
• Spells like Thunderwave push without provoking
• Grapple-and-drag doesn't provoke for the dragged creature

Teleportation:

• Misty Step, Dimension Door, etc. don't provoke
• You're not "moving out of reach" - you're disappearing

Other Methods:

• Become invisible (can't be seen)
• Knock the enemy prone first
• Move only within their reach (not out of it)

Class Features:

• Fighter (Cavalier): Mark enemies, bonus opportunity attacks
• Polearm Master feat: Opportunity attack when enemy ENTERS reach
• Sentinel feat: Target's speed becomes 0 when you hit
• War Caster feat: Cast a spell instead of weapon attack

Extended Reach:

• Polearms (10 ft reach) increase opportunity attack range
• Bugbear reach extends on your turn only

Powerful Combo:

• Polearm Master + Sentinel = enemies can't approach you easily
• They provoke when entering reach, get stopped if you hit