Nefeltari Vivi (001)

"[Once Per Turn] If your Character with a base cost of 4 or more would be K.O.'d, you may trash 1 card from your hand instead. [Activate: Main] You may rest this Leader: Give up to 1 of your opponent's Characters 2000 power during this turn. Then, up to 1 of your Characters without a [When Attacking] effect gains [Rush] during this turn."