Throat, length doesn't nesisarly determine how good it is. It's all about the information. Any ****** can talk about for 5 word doc pages how to kite someone back into your Q, or you to throw your Q by explaining step by step how to left click and aim. I think it's fine if he is ok with not going #1, this looks like a nice 4 or 3 spoter.

Gotta get them ArP marks.

No it's not Lagger, drop it. Runic is good on ADCs.

Anyways, this guide is not good enough for an upvote, but not bad enough for a downvote. I think going heal is a mistake. the current meta is to go ignite, and if you go heal, you'll probably end up regretting it. Most of all, I hate your skill order. I think the only way to skill sivir is W>E>Q>Q>Q>R. if you leave your shield for level 4, you're making a huge mistake. I'd take shield at level 2 against:
sona, taric, blitz, alistar, leona, nunu, graves, ezreal, corki, ashe, caitlyn, lulu, janna, lux, miss fortune, urgot, varus, volibear.

Going for level 2 BB at level 3 is bad because it costs a bajillion mana. Plus, your guide is really short.

One tip: You shouldn't be afraid to go 21-1-8 when running Heal. Runic Affinity is a bit of a noobtrap mastery. It is not essential under any circumstances, is only really beneficial if you're a mid laner or jungler, and even then it isn't a must. Stonewall008, the famous jungler, runs 9/21/0 on many of his champions.

it is indeed a way of getting mana but still the harass is to damn high to be ignored

Nice guide man, I like it a lot. But isn't sivir a countpick to cait as she gets free mana from traps and can block her ultimate? JW

Don't get me wrong - Your guide is ok.

It is basically a standard AD carry 101 build with nothing new added to Sivir that has not already been posted in better Sivir guides in more detail.

Will neither up nor downvote as I just do not see a relevance for your guide even exsisting.

Nice guide :)

what can I see simple in-depth aaaand it's working good job man