Magic the Gathering - Keyword Double Strike Rules Text Sticker

Double strike is a keyword ability that allows a creature to deal both first-strike and regular combat damage in the same combat damage step. This means that the creature will deal its combat damage to its target before that target has a chance to deal its combat damage to the creature, and then it will deal its combat damage again along with all other creatures that are dealing combat damage in the second combat damage step. Double strike is usually represented in the rules text of a card by the keyword "double strike," and the ability is often associated with creatures that are particularly powerful or agile.