Actions in Combat. When you take your action on your turn, you can do one of the following:

  • Climb onto a Bigger Creature (DMG p. 271)

  • Disarm Mark (DMG p. 271)

  • Identify a Spell (XGtE p. 85)

  • Overrun (DMG p. 272)

  • Shove Aside (DMG p. 272)

  • Tumble (DMG p. 272)

Many monsters have action options of their own in their stat blocks.