My black blue, tips and comments please

[Bluenote20]

Deck 60 cards, 0 sideboard 1 {Academy Ruins} 4 {Underground Sea} 4 {Polluted Delta} 1 {Island} 1 {Diamond Valley} 2 {Swamp} 4 {Watery Grave} 4 {Mishra's Factory} 1 {Strip Mine} 22 lands 4 {Epochrasite} 4 {Serendib Efreet} 2 {Tombstalker} 2 {Venser, Shaper Savant} 2 {Sower of Temptation} 1 {Clone} 15 creatures 3 {Brainstorm} 2 {Damnation} 4 {Psionic Blast} 1 {Mystical Tutor} 4 {Mana Drain} 2 {Innocent Blood} 1 {Mox Diamond} 1 {Sol Ring} 1 {Crucible of Worlds} 1 {Sword of Fire and Ice} 1 {Umezawa's Jitte} 2 {Jace, the Mind Sculptor} 23 other spells Sideboard

My main magic online deck for casual play. I would like your tips and comments. Mana drains can pull out tombstalkers early, epochrasite is very underestimated and always seems to overwhelm the opponent in the late game when 2 or 3 are cycling in and out, also great to sac to the diamond valley. Sower of temptation will grab a creature and if killed I usually sac the creature I took to the diamond valley. Get a person within 8 life and 2 Psionic blasts will end it, with a tutor and brainstorm they are easy to find. I use the clone to pop off a big legend or roll out a cheap second tombstalker. The crucible of worlds obviously can give you recurring strip mine and mishra's factory's depending if it hangs around.

[BlackJester]

...Mana drains can pull out tombstalkers early...

I'm not sure what you mean by this. 

[Bluenote20]

After I counter a spell using mana drain it often nets me alot of mana at the beginning of my next turn which I use to play tombstalker early on.

[Spikepit]

Dimir, my fav combination. I'm only a little dubious about the damage your Effreet does you when there's other 4 CMC Fliers and am wondering if you need the crucible if you're only sacing one land? Maybe you could swap that for a removal of some kind?

Loving all the old school cards!

[BlackJester]

{Strip Mine} + {Crucible of Worlds} = Downright mean.  lol

[Bluenote20]

I see your point about the {crucible of worlds} although it is mostly used for the {mishra's factory} and to combat decks with minor land destruction. I do have issues with enchantment And artifact heavy decks that set up a lock. Perhaps I should replace it with a {nevinyrral's disk}.

Although the damage from the efreets doesn't pose a problem very often at all what would you recommend as a replacement for them?

[BlackJester]

I like the disk!  It's a good panic button that can also cause players to hold back.  {Nevinyrral's Disk} with discard abilities is a good combination too.

I would try to get {Shadowmage Infiltrator} and load him with equipment.  Or the new {Invisible Stalker}.

[Bluenote20]

Excellent, the {invisible stalker} is great especially with the jitte and sword.  Missed that one in my creature search. I have run the {shadowmage infiltrator} in the past but It wasn't as effective as I thought it would have been but I also wasn't running any equipment at the time. Appreciate the input.

[Spikepit]

Although the damage from the efreets doesn't pose a problem very often at all what would you recommend as a replacement for them?

{Darkslick Drake}, {Shimmering Glasskite}, {Ghost Ship} or {Vampire Nighthawk} are cards I use around the same P/T and CMC level. Just a suggestion.