Just a fun idea.

Gunblade on Shyvana. :D

Benefits over blade: AP scales W, E and R. Including the W on hit. 15% 'lifesteal' on AAs. Plus 5% healing on W, E and R. Even more with Visage. So more overall healing. More AD, which means damage 'on hit'. ;D More active damage on squishies. Stronger slow. On hit burst damage from Hextech Revolver in build path.

I outhealed everyone in the match. Including a Tahm Kench and Gangplank.

Drawbacks: No %HP damage for 'HP stackers'. No stealing movespeed, only slow. No attack speed.

Just a fun idea, not a serious build suggestion.

http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2291323145/48865711/eog?tab=overview Example. Again, just for fun.