Talk:Guinsoo's Rageblade/@comment-24055932-20160505082512/@comment-25447003-20160505163230

It works as it says. The BC will stack faster. On-hit effect will apply on the Phantom hit, so a  Recurve Bow will x2 its on-hit damage, and will trigger more dmg reflected by Thornmail.

However, the Thornmail effect has been reduced unlike before, so the only significant dmg KogMaw may worry is from IE - fortunately he rarely builds it. Other AD items has some lifesteal or resistance so the dmg is mitigated partially (like BoRK, DD), and the magic on-hit damage is not reflected by Thornmail. So you can build Nashor, WitsEnd, Hextech stuffs ... on hybrid dmg champions (Jax, Eve, KogMaw, Kayle, Warwick, ...)