Legendary Actions

Actions: you can use your reaction to make one attack, move up to your speed, or cast a cantrip, at the end of another creature's turn. You can only perform one legendary action per round, You regain this ability at the start of your turn.

Resistances: If you fail a saving throw, you can choose to succeed instead as a reaction. Once you use this aspect of this feature, you can’t use it again until you finish a long rest.