When an enemy within 5 feet of you takes an action—such as Multiattack—that allows it to make multiple attacks or use additional abilities as a part of the same action, you can take a Reaction to prevent one of its attacks or abilities. You take this Reaction before any D20 Test is rolled for the action.
The enemy makes one fewer attack or uses one fewer ability than normal. You learn what attacks and abilities the enemy uses and choose which one to interrupt.
Number of Uses
You can use this Reaction three times. You regain one expended use when you finish a Short Rest, and you regain all expended uses when you finish a Long Rest.
At Higher Levels
When you reach certain Warden levels, you gain more uses of this Reaction, as shown in the Interrupt column of the Warden Features table.