User blog comment:IcyDevil34/Next Key LRIGs?/@comment-35126423-20180920070419/@comment-35126423-20190325060406

It was in one of the tweets.

https://twitter.com/wixoss_TCG/status/1109371442376802304

>花代はキーセレ初の2止め戦略として拡張パックだけで組める

"Hanayo can only be made with pack as the first key two-stop strategy."