Originally Posted by blacksaber

Not sure how you can try 10 times, and not get a slayer. We both know the chances of getting a slayer go up with each fail. The only thing I can think of is you don't have card reveals to use when the chance reaches 100%.

You're wrong. The chance in event gacha is to get a SR, a fucking SR, not even an event SR. Read the small text in gacha details and look the difference.

The box may be filled with some multiple and redundant SR cards

This means you can get any card from event gacha (even N ones), fail chance only guarantee a SR type (from stage, n gacha and ofc, event gacha) when it hits 100%.