Wave 11 - Alpha Hunter - Stalking Mode

"Action: Discard this card to target a ship at range 1-3. The target ship's skill Number is reduced by 2. In addition, during the Roll Attack Dice step, gain +1 attack die against the target ship. Both of these effects last until the end of the game."
1) Since the card does not use the word "you" or "your" in its effect, does this mean your other ships can and must (since it is not optional) take advantage of the +1 attack die this ability grants?
2) Does this +1 attack die also affect other forms of damage (like Mines in the movement phase), or are these damage inflicting abilities not considered to have a "Roll Attack Dice step"?