Thread:Reikkenx/@comment-25867286-20150630204333/@comment-1973463-20150701052402

It works really well for me. The damage output is really great. I continually surprise my opponents by how much damage she puts out with just a botrk, and the active is a nice bonus.

Anyway indeed you can't just have AS. The next thing you want after botrk is some raw AD. And a lot of it. For me this is usually Maw of Malmortius as it can potentially provide the most AD of any item in the game at 95 AND gives you magic burst resistance comparable to a spirit visage (40 MR and 400 health). But Bloodthirster/Sanguine is the best thing when magic isn't a concern. And is usually my next buy after Maw regardless.

After those items, your best choices for more damage are last whisper and wit's end. Last whisper has a slight edge over wit's on damage output (like 5% typically) and lets your ult hit notably harder (like 15-20%) and is a bit cheaper, while wit's gets you a ton of MR and shreds enemy MR so your magic allies hit a bit harder. Both good choices.

Interestingly, even though Last Whisper is the big armor penetration item, the more armor your enemy has, the better Wit's End performs as compared to Last Whisper. Essentially it seems that if your enemy is stacking armor, it's better to just amp up your magic damage rather than try to penetrate the armor. And of course the opposite is also true. The more MR they have, the better Last Whisper compares to Wit's End. Though feel free to get both eventually. Getting both is the best thing against armor stacking. (yes, better than getting cleaver. and cheaper too)

MF doesn't scale well with crit, but after last whisper and two big AD items, Phantom Dancer is a good choice. Though not by a lot, it gets you more damage than wit's end would in that situation (If you don't have LW, PD gets you roughly equal damage as wit's end while being more expensive and giving no MR, so it's not a great buy)

Another situationally very effective option for a late item is to, instead of getting more damage, get a randuin's omen. If you already have tons of damage, a big chunk of defense to let you not die when jumped on by bruisers can be just what you need.

And for completeness, another item to consider is trinity force. It's good both early for the proc, and good extremely late for its high cost and therefore high slot efficiency. It's expensive, so it won't get you quite as much damage for the money as botrk and the other items I've mentioned, but it does get you a lot of move speed. I haven't actually tried it myself (I really should), so I can't speak to how much the move speed helps, but I have seen it used frequently by another good MF player I know.

Now you may have noticed that I didn't really list crit items as options and said MF doesn't scale well with crit. That's in large part due to the fact that she basically already has crit innately. Impure Shots does the same thing as crit: multiplies your AD. And in a way it's better than crit because it's magic damage, and MR is always lower than armor. So you already have a multiplier. So rather than increase your multiplier, it's better to just increase the AD that it's multiplying. Now obviously IE will give you more damage than a BT since they both have the same AD and one has crit and the other doesn't, but the damage you lose by not critting you get back by lifestealing, and it's better to make fights a little longer (do slightly less damage and live slightly longer) so that impure shots can stack up. Also BT is cheaper and gets you a shield. (Also sanguine blade is better than either of them. best AD/gold of any item in the game.)

tl;dr:

RUSH: BotRK Early: Maw, BT/Sanguine Later: LW, Wit's situational, late: Randuin's, PD maybe(??): Trinity