if you ran out before this purchase)
After the double doran's ring purchase you have one of two choices. If you think you're absolutely crushing the opposing mid, you can go into a
immediately and push that advantage. This allows for very aggressive gameplay as you will be doing a ton of damage off of just your Noxious Blast without even any Twin Fang follow-ups. The other option is to pick up the
which allows for very safe play. You become much tankier and can survive ganks that much more readily.
This is there things get interesting. I've played two builds that I think both work very well for Cassiopeia. The first is the standard high dps damage build. You build as much AP and magic pen for as much damage in as little time as possible. The second puts Cassiopeia at 40% CDR dropping her ult from a 110 second CD to a 66 second CD. The second build is very useful if your team lacks any really strong initiation or if you feel that you need to be the one to initiate for your team in say a solo queue game.
Final Items DPS Build:
Final Items CDR Build:
is hands down the best item on Cassiopeia. As a combo caster, Cassiopeia's damage output relies on hitting skill after skill without any misses. While it is entirely possible to do this without a Rylai's, the slow proc from Rylai's makes it incredibly difficult to dodge Cassiopeia's combos. The slow synergizes amazingly well with Cassiopeia's Noxious Blast passive. We go faster, they go slower, done deal. I have killed countless champions without ever using ult simply because they can't outrun you with Rylai's procs. This item let me chase down a shyvana from wraith camp to wraith camp. If Shyvana can't outrun you, you know you got a pretty nice slow.
Cassiopeia's E is now registered as single target spell and will gain the full benefit from Rylai's slow! Hurray!
With the fix on Cassiopeia's Twin Fang to now be registered as single target damage, Cassiopeia can benefit fully from the spell vamp items. Spirit of the Spectral Wraith gives Cass a little bit of everything she needs and a hefty 20% spell vamp to boot. It's enough spellvamp to make a difference and the perfect item to not waste any of the stats to do so. The reason this item is a better buy than Will of the Ancients is due to both the lower cost (500g) and the mana regen and CDR it provides. WotA may however be a better option to buy if you're playing on a team that can benefit from the aura effect such as an AP top laner or an AP jungler. Otherwise, Spirit of the Spectral Wraith every time as far as spellvamp items are concerned.
I only build this if I choose to go for the CDR build or if I'm feeling completely overwhelmed in lane against a hard AP matchup. It's a pretty nice item that gives you a little bit of everything and I've survived more than a few times against caster mids thanks to this item. The 20% cdr is amazing and actually quite noticeable despite your low CD spells. It really helps to increase your presence in lane with the mana regen and you won't be the only one to notice as you continuously spam at your lane opponent.
Cassiopeia is already a high burst champion and this item really helps to make that attribute shine. 120 AP straight up and an active that deals damage and amplifies damage taken from you. If you intend to use both your ult and DFG, make sure you ult first. Guaranteeing the stun is more effective than getting the 20% damage to tack on to your ult. Opening with DFG may give people with a quick reaction time enough heads up to turn and avoid the stun from your ult. The damage will still be insane because of the 20% increase on your ult but frankly it's unnecessary due to the high damage output from your normal Q->W->EEEE combo. I believe it's just better to just guarantee the stun from ult and capitalize on damage thereafter.
Other Items to Consider:
not something I normally build on Cassiopeia but when the going gets tough and you need absolutely need to stay alive to kill every last fucker on their team, this item synergizes great with your Rylai's. Especially now that health scales so incredibly well, having the bonus health from Rylai's AND ROA makes you insanely difficult to kill. Couple that with the scaling health runes and you may as well be a tank instead of a carry.
CDR is really great for Cass as I mentioned earlier. Morellonomicon is a pretty strong item with a 20% CDR but I feel it may lack the AP needed for Cass. The heal reduction passive is generally not necessary because of the sheer amount of damage Cassiopeia is able to deal in a very short period of time. However, this item may be a huge help if you find yourself against fed champions with insane amounts of regen such as Swain, Dr. Mundo, and now Aatrox. This and ignite should take care of such problems fairly easily.
While Archangel's Staff isn't that great on Cassiopeia, it's evolution into Seraph's Embrace can be quite useful in many situations. The shield is a real life saver against comps with high burst damage or gap closers. This item will let you live and reposition yourself properly to either survive or continue to do damage from your new location. Especially good when used in tandem with your ult for counter initiates.
Do Not Build:
you never auto attack, at least you shouldn't be. Every time you auto attack you could be spamming Twin Fang instead for way more damage, even if you get LB procs. Especially now with the spellsword mastery point which is essentially a mini lich bane anyway, this item is just a waste of money.
it may seem like an awesome idea since "hey, I have 2 DoTs and ignite, may as well add another". This item has neither good health nor good damage. It's expensive and doesn't fit into the build order at any time. The DoT is completely unnecessary given that your Noxious Blast does an insane amount of damage already and you're not really lacking in the DoT damage department.