Help! Going From Tank/assassin support to Enchanter, Imperial Mandate into Blood Letter Curse on Nami?

Since Nami E Procs bloodletter, you could give a free buff to champions who can abilities off in a team fight with scaling assistance.

Bloodletter with just E would slowly amplify E, and a minimum of 1 bloodletter stack as you proc mandate

Now Jax would be dealing 30% more damage, or anyone summons on there autos, and you can do it from the safety of the back line.

Issue is, I had to get 1 kill bot lane during a fight, rotate mid to secure a bad mid, then gank top to get a bad top, then help top finish tower to get enough gold to even do this. I had 1 kill, 3 assists, 2 tower plating's to finish my bloodletter 1/3/13 at 20 minutes.

Our whole team used AP (besides Vayne) so I thought it would be helpful.

Just a thought for this being better on Nami over let's say Milio even though I think later on he is stronger then her for damage aid, but the issue is the play style is completely different.