So before I used to just build Morellos and DFG with her, but with the removal of DFG(I can see why they did though) I am wondering what to build with on her. I like to have high CD so I can have the option to go with a 7 ball combo(needs 35%-40% CD), and as such lately I have been building 
, 
, and 
/
depending on situation.
I am wondering what other items people build with on Syndra.
can be good.
if you're willing to sacrifice your early game damage (which is poop now that they nerfed her anyways), Tear -> Athenes gives you unlimited mana (essentially) and you can take 15% scaling CDR glyphs to get to 40% by level 18. It lets you be a very spammy mage and your ultimates will have 5-6 balls in them most of the time.
Some alternative sources of CDR are 
They both offer 10%, I'm not sure how effective WotA will be given that most of her abilities are AoE, but her ult should give some substantial healing, you can also look at Twin Shadows, this gives you some protection in that you can activate it and the ghosts will seek out nearby enemy champions, you can utilize it to scout out the area ahead so you don't blindly walk into your own death while trying to establish or refresh vision. I like CDR runes in the mid lane a lot of the time, carrying 6 flat CDR glyphs paired with the Sorcery mastery lets you walk into the game at 10% CDR, this is good for an earlier focused game so it might not be really viable for Syndra I'm not entirely certain.
Hello, i've started to play LoL in mid S4, my mains are Diana 
and Syndra 
, lately i play mostly Syndra and have over 150 games with her, this is my opinion on her build.
First about runes, i favoritize; reds magic pen., yellows armor, blues flat ap and my quints are movement speed. As for masteries i will only say, do not put a single point in defense tree, mine are 21/0/9 and it has served me well so far.
Depending on ap/ad enemy laner, go with Unholy Grail 
vs ap as it provides magic resist and CDR and Morello vs ad as it gives much needed CDR and nice amount of ap with nice passive for more kill potential and bullying (never ever rush zhonya as first item, even vs Zed, CDR is crucial on Syndra), btw for your 3rd item i recommend u buy one of these 2 already mentioned, i go this way cause i simply love 40% CDR on her. As second item go with boots , u have 2 viable choices, if u build only one CDR item, go with Boots of Ionian Lucidity but only if u are sure thet enemy won't be trying to nulify you by stacking magic resist, now main boots are of course Sorcerer's Shoes 
, every apc (being ability power CASTER, not CARRY, i rly needed to say this cause ignorance is irritating me so..) will buy these lovelys, almost no exception, as for enchantment Alacrity 
is only one that Syndra needs, no other, not even Homeguard 
or Furor 
which is useless on her since she does only AoE dmg apart from her ult. Now as remaining 3 items, it depends on who you are facing and how is your enemy progressing. I usually skip Void Staff 
unless there are at least 2 enemies stacking magic resist (although it is prime item for single targeting champions...), after all there are 5 enemies, plus Syndra player should be master of picking out targets so u generaly can avoid one carrying a lot of MR or simply stun them and simply dissengage, btw there is so many viable items for Syndra, i do not want to lose one by buying Staff unless it is apsolutly neccesarry. Let's presume i skipped Void Staff, 3 more spots left; u need one of holy trinity for apc's : Zhonya's , Rabadon's or Luden's 
, u will have 1 or 2 of these, it's worth saying this now, if u plan to build some HP (i usually do not, 400 Hp will harldy help in the late game if u play vs fed enemies, i stack HP very rarely, for instance when our teams are equaly good/bad, but in the end i more so rely on positioning and using my stun then HP for survival), build only 1 of holy trinity items, i reccomend Zhonya's, not only vs ad enemies, it can save u after turret dive if u have smart teammate or minions help, it can prolong your usefullnes in teamfights, etc. If u decide to go for another 120 ap item, chose between Rabadon's and Luden's, i prefer Luden's Echo because Rabadon's is more usefull on high mobility champs like Le Blanc or Katarina, as Luden's is excellent for Aoe damage, poke and wave clear (i mean, 100 + 10% ap bonus magic dmg up to 4 target on hit), and it has movement speed spike, all of which thing Syndra needs and strives on. If u decided to go with a single 120 ap item and want some extra HP, chose beetween Rylai's Crystal Scepter or Liandry's Torment 
, some think that both of these items are good together, actaully that Ryali's procs on spell damage from Liandry's, but look, Liandy's Torment's passive does NOT count as spell damage, with that said, do not build both of these if u hope for this combo (altough i think that Liandry's can proc on Rylai's slow, i'm not really sure how this works so do not take me on this), now both items are very usefull on Syndra and i will not tell you which one to buy, you decide on your enemy composition, do you want extra slow, more ap and slightly more hp or do you want less ap, slightly less HP and deal 6% hp burn damage over time plus something little extra. For last item 9 in 10 players will go for pure defensive item, for Syndra u have 2 from which u get to pick one, it should never be a hard choice because it is already propably very late game by now and u should know what does the situation demands, those items are Guardian Angel 
and Banshee's Veil 
, i belive everyone knows benefits of each one, now you pick one and you have your full build.
I hope this helped a bit :))
Btw, i apologize if some words were wrongly written i do not main english...
Damage - CDR->Magic Pen->AP - Her E/R require 625/900 AP to match the base damage. Q/W takes less than 400. W isn't important. If you don't think you will have a lot of chances to use R safely you can put AP above magic pen. But I'd still get Void before Deathcap(Ludens if ahead).
Defense - HP->MR=Armor->Kiting(situational). With her ability to nuke an ADC down and CC them I'd put MR above armor. HP is the best general defense option. But it usually wont fit her build. Just keep it in mind as a last resort. Items like BV and BoC both have MR/HP. Which will save you more than a flat MR item(Abyssal/Athene). Kiting is iffy. She already does it well and champions that can catch her anyway generally wont care about kiting items.
or - I prefer Athene for the stronger regen and safety. Spamming orbs later in the game and in team fights can really drain her. Morello's is fine though if you want the passive or are behind on gold. I don't find the AP difference too important as CDR and magic pen are her largest gains of damage.
First main damage item. While Deathcap will give more total damage, it also costs more. And as I stated above, she scales very well with magic pen because of her low scaling/high base. Ludens/Hourglass can be bought before depending on the situation. Also helps if you're able to start getting ahead as they can't so easily counter build you.
or Both can be bought. But don't always plan on it. Deathcap will give more total damage in longer fights and Luden's for MS/poke. if you're ahead get Ludens. Landing an extra 100 base damage on a Q hurts. More than Deathcap will give. If you're on a great start get this before Void and maybe before finishing Athene/Morello(but at least start the mana regen spot). Generally Ludens if buying early, Deathcap if buying later.
Almost an always buy. If you are on a team where you feel safe(enemy has weak engage, your team has massive front line/peal) you can consider skipping it. But you are immobile. Try to have it before larger team fights start. Get early vs enemies who can dive and kill you easily(mainly assassins).
If you need help kiting. On top of her casting while moving this is a powerful combo. AP rework will make it even more wanted with a 40% slow. But still situational.
Underrated item. Like Rylia's it helps kiting. But it also checks bushes, larger range and has CDR. I'd take this over a second Morello/Athene. Has enough CDR to give you 35% with masteries. Last 5% can be covered with runes if you want it. But this isn't that common of a buy that you can so easily assume you'll have it. MS boost is also nice for Syndra.
Following the magic pen theme. CDR boots are an option. But CDR is much easier to get.
Very situational. You wont generally want to be that close to be landing this on a tank. You wont be on the front line unless you're about to ult or make a pick with your stun. She can have a great up time on it with her Q. AP rework may change this as it'll have OK AP. Generally best to leave the tank busting to your ADC though.
Standard MR/AP item. Remember though that since you gain 43% magic pen from Void/Masteries the MR reduction of this is reduced for you. Since it lowers it by 20 you also lose 20 to reduce. Making the MR shred worth ~12 instead of 20. While this is still nice to have it's just something to keep note.
If your team needs the aura. You can make use of the stats and since you're not as AP reliant as most mages you can get away with it. Don't go out trying to justify buying it. Just throwing it out there. If you want MR Abyssal comes with higher MR and AP while being 560g cheaper. Only get this if you want the aura. If you need a stronger MR item get BV. If their dive is strong and you're dying a lot get GA/Hourglass.
or Bit more direct defensive items. Neither a bad choice. But don't pick up too many MR items. Your job is damage. Stick to one of these two or the above two. If you're dying too much even with these items play more of a secondary support. Syndra does it surprisingly well.
My preferred build order if everything goes as planned and I don't get behind/fed. With a last situational item.
