So, I noticed that the new Rylai's applied the full slow on AoE abilities, which immediately got me thinking about Shyvana.
I've always wanted to build Shyv as a full tank, capable of actual CC and peeling. So here's a bit of an idea I came up with...
Haven't really tested it yet, but was hoping to get some ideas from fellow theory-crafters.
You know, that full tank means no damage items, right? You have a bruiser here. Also AP is pretty much wasted (yes, you'll get 60 more damage on your E, WOOHOO!) frozen mallet would be much, much better. It would give you more dps, more health, and a better slow. Also locket is bad. There are way better items out there.
isn't really a tank item. You get it for damage and slow. The HP is more like a bonus, tbh. You could totally switch it out for 
, though.
Also, gives you useless mana. The aura is probably not worth an item slot. You could switch it out for 
for the Cold Steel passive (although it only works when they attack you).
isn't that good of a MR item unless you really want the passive and the active.
Frozen mallet would be better on her. She doesn't need the mana from frozen heart and AS helps her more than CDR. Not sure about locket either.
IMO switch the heart for an omen, the rylai's for a mallet, and the locket for either a warmogs, a Spirit Visage, thornmail, or a Veil based on the game's needs.
Rylai's slows more and in an AoE. New Rylai's applies the full 40% slow on AoE spells, opposed to Mallet making a single-target 35% slow.
Running my current rune/mastery setup, Frozen heart set's me at 40% CDR come level 18. Combined with the Attack Speed I have at max level, I can keep Burnout up indefinitely in a fight, as long as I remain in melee. Bork only adds to that, as well as synergizing well with Shyvana and giving me its active for catching people.
SO, again, the Heart+Rylai's are the core of this build. I run in with burnout up, and slow the entire enemy team by 40%, alongside their attack speed.
I am an AoE wither. That is the goal of the build. Everything else is going to be built around that concept. So I'm looking for items to keep me in the middle of their team, and keep me alive.
/ 
