Re: Item Build for Rizzrak, the Goblin Shredder
MoM, AC, BF... I can't really understand why the heck Rizzrak needs those.
Inb4 "MoM for movespeed, AC for team auras, BF for mana". KK.
IMO starting with a stout shield is a must, but VG is very situanional.
Mainstream build for him is AB -> PB+VB -> Disassemble AB; then build bloodstone.
Linken isn't bad altrnative, but sometimes you should think of BKB after you solve your general mana problems. In the meantime you must address armor problems, probably buy a chainmail that you may want to turn into Blademail later.
Shiva synergizes with him in many ways, Guinsoo is always nice, esp. since it takes a lot to satisfy his mana hunger. Rod of Athos is useful aswell, but you have to pick your items, not that you will have all gold in the world.
Generally, you will need at least one big mana item, something to boost your armour and something to help restoring your HP (not a must, but good idea) so that damage can't stop you from ganking and to increase your ninja'ing potential.
Basically, it's like Pit's build (except applicability of supportive gear and that healing part, they aren't similar in this way), but Shredder is much more of a mana whore and he's also a high-aggro tharget with escape mech, keep that in mind too.
Also remember that building up a mana pool to use his pure damage abilities is easier than taking your melee attack to the same level of effectiveness. You have a potential to deal about 200 DPS to a single target (not to mention that you usually hit more than one target) penetrating damage reduction means, to surpass that you have to deal like 400-500 physical DPS later in the game. Trying to achieve this totally not worth it since you don't have steroids and your stats gain is subpar, to say the least. So items I mentioned in the begining of the post is a no-no IMO.
Another thing is Radi, it's sort of good, but you have higher priorities. If you think that it will still be usefull later, you can go for it, but I'm not so sure. Not that Shredder is a hero who will spend a ton of time to farm.
"The most perfidious way of harming a cause consists of defending it deliberately with faulty arguments."
— Friedrich Nietzsche
Note that I have that infamous edit-a-lot-after-posting syndrome.