You can make an Opportunity Attack when a creature that you can see leaves your reach using its action, its Bonus Action, its Reaction, or one of its speeds. To make the Opportunity Attack, take a Reaction to make one melee attack with a weapon or an Unarmed Strike against the provoking creature. The attack occurs right before the creature leaves your reach. See also "Playing the Game" ("Combat").
Includes material from the System Reference Document (SRD 5.2.1 / 5.1) by Wizards of the Coast, licensed under CC BY 4.0. Converted to Markdown, split into pages and cross-linked by OmnisGM.Legal
Dungeons & Dragons and D&D are trademarks of Wizards of the Coast LLC. OmnisGM is an independent project, not affiliated with or endorsed by Wizards of the Coast.