Charlotte Oven [A Fist of Divine Speed]

[Activate: Main] You may rest this Character: Choose a cost and reveal 1 card from the top of your opponent's deck. If the revealed card has the chosen cost, K.O. up to 1 of your opponent's Characters with a base cost of 3 or less. Then, add up to 1 DON!! card from your DON!! deck and rest it.