Talk:Miss Fortune/@comment-220.136.37.241-20120422130500/@comment-173.242.247.69-20120423073552

It's an on-hit effect is why, no on-hit effect OR ability which deals on-hit effect damage works with Rylai's. You can already get Frozen Mallet to slow with your auto attacks, it doesn't need to anyways.

The slow from Rylai's would only work with her E with reduced effect since the spell already slows, and her ultimate. However, her Q will slow if you have Frozen Mallet instead.