User blog comment:Tricoro/This game is alive! Kakao Cookie Run Updates to Season 6/@comment-26044650-20150201150647/@comment-26044650-20150203040041

I finally found a video of the 4th L Cookie.

You can view it here, 7:28 in.

Looks like her ability destroys obstacles in front of her for a few moments and at the end, you get a ton of Yellow Star jellies.