Voron

More token creators like Captain of the Watch? Or do you want to keep it T2?

Using Sarkhan to blow up Skithiryx for an instant 10poison kill... interesting :P but try making it faster :P

You can use as much legendary's as you want (you could also make an all legendary EDH deck, and yes that works!) But! One legendary has to be your general. In a Sliver Deck that would be Sliver Overlord. :)

W/G knights could still be a lot better!

here is a good example:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=135160

Oke, you got some good idea's there :) But with such a low land count, you might put in some less Control and a bit more aggro :)

You could also change your fetch lands with cards like Flooded Strand or Marsh Flats. They might cost you life, but they increase the speed of the deck.

You don't really need Soldier Tokens in a good strong Soldier deck, but a card like Captain of the Watch is still needed. And if you really don't want tokens then you should really add Veteran Armorsmith and Veteran Swordsmith.

Here, check out my "non-token" soldier deck, you might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=148692

Drop Training Grounds, it's useless...

And what do you want to do with this Myr-deck?

One is called Mistform Warchief, but I can't find the others :s

But still, try adding "Grave Pact", "Bonehoard", "Mortivore" and maybe some black spells that destroy opponents creatures some more ;)

This was one of my first experiments with multi-colored lands. And yes, I found out that tap-lands slow a deck down...A LOT! And this deck has the potential to be very fast. I own this deck, and I can tell you that I don't use that many non-basic lands in it XD I'm just a little bit to lazy to update it here.

You might want to check out my G/R(B) Ally deck, you might get some inspiration:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=143327

There are ways to improve Illusions a lot! Better check out some very old illusions, 'cause they have a couple of strong support creatures ( one that lowers the cost, one who's power increases with the number of illusions etc)

And if you use a little bit black (cards like bonehoard, gravepact) you want to kill your own illusions even!

Maybe add some changelings? And try adding a mimic vat maybe.

Nice one! :D But you could drop down Rafiq to 3-2 because he's just a legendary, and maybe add Noble Hierach, for the mana fixing :)

btw, here's my super sweet Bant infect deck, you might get some more idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=162524

Ooh! Nice one :D Another proof that non-black infect decks can rule!!! <3 But maybe add those red lands that give a creature +2/+0 or doesn't let an enemy creature blocks when it gets into play? And you could add those together with a Knight of the Reliquary. Some sort of Infect Toolbox?

Btw, here is a link to my Bant-themed infect deck, you might get some inspiration:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=162524

The problem with angels is that they don't really have support cards, they are powerful additions to other decks, but not really as a tribe themself.

I would play more permanents that would abuse your general's ability. So more cards that would increase your opponents mana costs and/or decrease yours :)

OMG XD the look on your opponents face would be just priceless when he sees these combo's XD

You can do 2 things to make Merfolk stronger: Make it more Aggro or make it more control.
Aggro: Add more Merfolk lords (creature cards that give other merfolk +1/+1, there really are a lot of those, and it makes Merfolk almost overpowered)
Control: Add more Merfolk Wizards, what's the deal with merfolk wizards you ask? Check this deck:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=137733

Basilisk Collar is better Gorgon Flail. You even get 1 life that way :)

And maybe try "Cinder Pyromancer'' It's like a second Gelectrode :P

And here's mine Izzet deck, you might get some idea's:
http://www.mtgvault.com/ViewDeck.aspx?DeckID=150951

"Curiosity" :)