I felt with the dedication to fetches into duals, that cobra would be worth it.  It's mana accel and a body to beat with.   I suppose it could be better as a maybe duress/teeg/other beats.  I really like the gush/bond/cobra/daze grouping, and it fits very nicely in this deck with so much attention in fetches.  i could even add more fetches.

with my list, i was actually really surprised at how strong death's shadow was.  i could get my life down to 8 without a problem or major effort by turn 3 and it was a 5+/5+ for b and i could lay some serious hurt down with goyfs.  my only concern was confidants are especially risky with FoW and you getting your life down so low to begin with. 

Emo Fish.Dec  UBg

4 Polluted Delta
4 Misty Rainforce
3 Watery Grave
3 Underground Sea
2 Bayou
1 Tropical Island
1 Overgrown Tomb

4 Tarmogoyf
4 Lotus Cobra
4 Dark Confidant
3 Death's Shadow

4 Force of WIll
4 daze
4 gush
3 Sylvan Library
3 Lim-Dul's Vault
1 Time Walk
1 Mystical Tutor
1 Ancestral Recall

1 Mox Emerald
1 Mox Sapphire
1 Mox Jet
1 Black Lotus
1 Fastbond

SB:
2 Umezawa's Jitte
3 Trygon Predator
1 Hurkyl's Recall
1 Chain of Vapor
3 Stifle
1 Oxidize
3 Leyline of the Void

I like everything but Citadel.  I'm not sure it's really necessary, beyond just theme.  3 damage is a lot for one mana each turn.

One thing people need to keep in mind is that good deck > good theme.  Don't plug in self damage stuff just for the sake of damaging yourself.  What you want is to take guys that would normally be bad because of excessive damage they deal to you, and find a way to abuse that and turn it into a positive, so not only do you get a powerful effect, but the 'drawback' is suddenly helping you as well.   Just don't focus on the theme, focus on making the deck run well.  Adding jank, just to fit the theme is going to result in the deck just being inconsistent and ineffective.

I think if you should definitely look into including StP if you're going with the multi color/Death's Shadow route. 

Just be careful to make sure it's actually worth it.  Death's Shadow by itself is not worth losing 15 life for.


Off the top of my head, this is where I'd probably start:

4x City of Brass
4x other rainbow pain land
6 fetches
6x duals

5x mox
1x lotus
1x lotus petal

4x death's shadow
4x tarmogoyf
4x dark confidant
3x academy rector

4x therapy
4x stp
1x bargain
1x form of the dragon
4x berserk
4x sign in blood

SB:
4x pyrostatic pillar
3x tin street hooligan/shattering spree/viridian shaman?
4x chalice of the void
4x leyline of the void

Just threw this together for ideas.  I want more beats, but not sure if Tarmogoyf/Confident/Tog etc. would really fit.

Lands: 17
4x Misty Rainforest
4x Polluted Delta
4x Tropical Island
4x Underground Sea
1x Island

Mana: 6
5 Moxen
1 Lotus

Broke: 3
1 Time Walk
1 Recall
1 Yawgmoth's Will

Draw/Tutor: 6
1 Brainstorm
1 Ponder
1 Mystical Tutor
1 Vampiric Tutor
2 Jace, the Mindsculptor

Disruption: 8
4 Force of Will
4 Daze

Engine: 19
4 Gush
4 Lotus Cobra
4 Fathom Seer
3 Summer Bloom
2 High Tide
1 Fast bond

Win: 2
2 Tendrils