User blog comment:Sakuraiayano/QUESTIONS ABOUT TOWER EVENTS!/@comment-24375849-20140109054406

Firstly, there will be a preannouncement about the event, so you have some time to prepare.

Secondly, I defeated Guardian ghosts (and even wandering ghosts like Kinnara) using skills before. You have to make sure that your skill will proc and the total attack when skill is triggered is higher than the defense of the Guardian ghost (the defense can be found in this wiki)