This card’s name is far too similar to the existing card Guerrilla Tactics. It’ll be changed during creative review.

If a spell or ability an opponent controls causes you to make a choice and you choose to discard Gorilla Tactics, its last ability will trigger.

In a Magic game, cards are discarded only from a player’s hand. Effects that put cards from a player’s library into that player’s graveyard do not cause those cards to be discarded.