Magic the Gathering rat/discard deck...improvements, thoughts?

Question

I play casually, not tournaments or anything just with friends mostly. I only have a limited collection and just makes decks with what i've got. Just for fun i tried to make a rat deck, which then turned into kind of a rat/discard thing.

Any thoughts or improvements (keep in mind i don't have a huge collection, if possible suggest something a little more common)

Lands:

16 swamps

2 cabal coffers

1 bottomless vault

Creatures:

4 swarm of rats

4 ravenous rats

3 chittering rats

3 razortooth rats

2 crypt rats

Enchantments/Artifacts:

2 megrim

2 death pits of rath

1 oppression

1 necrogen mists

1 mirari

Instants/Sorceries

4 terror

4 wrench mind

3 ostracize

3 strongarm tactics

4 fill with fright

2 aphetto dredging

2 blackmail

Answer 1

a good thing for this deck would be to get 2 more megrims, and if you really want to make a really cool rat deck look into finding relentless rats, you can normally get them off people for not too much

Answer 2

"a good thing for this deck would be to get 2 more megrims, and if you really want to make a really cool rat deck look into finding relentless rats, you can normally get them off people for not too much"

Sorry had to comment on this, 4 megrims paints a target on your head and you need to be going superfast aggro, if they get one or two big creatures in play and start getting beats then his rats will go. Relentless rats needs to be nothing but relentless rats and really a coat of arms and thrumming stone.

There are a slew of rats from the champion of kawiagama set that have discard effects that you might use. You should try to get ahold of a geth grimore, lets you draw a card when an opponent discards a card. A syphon mind from legions makes them discard and you draw.

Answer 3

if you are staying with rats, you might want to include swarmyard, a lower priced rare from time spiral.  It is a land that lets you regenerate rats.  Also you might include duress from older sets, or raven's crime from the eventide set.