He was attacking with this card, and I blocked it with two creatures because of the double strike. My opponent USED THE ACTIVE ABILITY which clearly says TAP Seasoned Hallowblade. His attack
Double Strike in MTG - Rules, Best Cards + Decks!
Kusari-Gama with first strike/double strike interaction, if blocked is damage done at the first combat step or at the end of the combat phase? : r/ mtg
Top 30 Double Strike Cards in Magic: The Gathering - HobbyLark
Double Strike in MTG: Rules, History, and Best Cards - Draftsim