It's a fantasy role-playing game.

DM: You are Grog Strongjaw, a goliath barbarian . You are the member of the famous group of adventurers. Previously,  My love, we're not ready, but the timetable's been pushed - we have no choice.  She runs to him and wraps her arms around him, attempting to Dimension Door elsewhere, but Scanlan prevents their escape with a quick Counterspell.
DM: At the end of your turn, he's going to use his third legendary action in this round to, without any attacks of opportunity, move.
Player: Is that Lord Briarwood?
DM: Yes. He pulls away, still trying to get out of the range of the sunlight.
Player: Okay. The Boots of Levitation. It says it requires an action to levitate?
DM: Correct.
Player: Could I do three attacks? Or just two, and then have the action left over?
DM: You could action and then you'd have your one bonus strike as a frenzied rage.
