Tempest Kick - 500 Years In The Future (OP07)

Product Details:

Card No: OP07-096
Rarity: R
Color: Black
Card Type: Event
Cost: 1
Power: -
Counter: -
Attribute: -
Type: CP9
Card Set: -500 Years in the Future- [OP-07]

Effect:
[Main] Draw 1 card. Then, if you have 10 or more cards in your trash, give up to 1 of your opponent's Characters −3 cost during this turn.

Trigger
[Trigger] K.O. up to 1 of your opponent's Characters with a cost of 3 or less.

Card Questions/Ruling:

• I activated this [Main] effect when I had 9 cards in my trash. At this time, can I give up to 1 of my opponent's Characters -3 cost during this turn?
  Yes, you can.