Kazzong

Corpsejack menace would be a nightmare in here.

Signal is good, but you Have no graveyard based cards, or retrieval cards. Not saying it is a bad choice, just my opinion. Into the wild... I see some goodness there, but then the question becomes this: are you gong to use it for mana ramping, or to thin the deck, so you aren't dead drawing lands late game?

That makes sense. Gotta love elves. :). Ok, oh perhaps another suggestion for disruption: Kozileks inquisition, or maybe Distress if you can do the double black.

Perhaps some life gain, like essence warden or something similar. Or early game hand disruption like duress or thoughtsieze perhaps. To keep your combo safe. Or perhaps even phyrexian probe, to make sure it is safe to even cast the combo. Those are my suggestions. :). Although I am curious as to why you are taking out lands...O.o?

The autumn's veil? Or ranger's guile? You already have ranger's guile in the main board, so that would make sense. Swap one out for the other, depending on the conditions. :)

Not gonna lie, pandemonium would wreck people with Mycoloth putting out tons of 1/1s each turn

yes, you can do that, although I am pretty sure that is what the ranger's guile is in here to prevent. Another FANTASTIC card to deal with that kind of thing is Autumn's veil. spells you control can't be countered by black or blue spells this turn, and creatures you control can't be targeted by black or blue spells this turn. It is an instant for G to cast. amazing card. :)
Edit: in response to Rickell.

ah, but you can fling in response to the doom blade. and since it goes on top of it on the stack, it resolves first and the doom blade fizzles.

well, to each his own. personally I think it is a better sideboard card, but maybe your meta runs planeswalkers more. although if you REALLY like the anti planeswalker effect mainboard... then perhaps you might consider running beast within. a little more mana wise, but it can destroy anything, and can't be regened. although my personal favorite anti planeswalker card is Vampire Hexmage.

ok, but in respect to just how much those actually get played competitive... I would say that it is a sideboard card at best. and besides, if you get your combo out, how much is a single planeswalker card going to really do, unless it is agro, which jace isn't and Domri isn't powerful enough to keep up with. Planeswalkers are just slow in general, and yeah if you let them STAY out they can be harder to deal with, but you can still attack them with... how many 1/1s by the point that they are really a threat?

also, since this isn't standard, I would say to run terminate instead of dreadbore.

conjuror's closet would be a way fun card to throw in here, to flicker the Mycoloths. :)

Random thought... You should totally throw 4 city of brass in here. :)

I think that Norn's annex would make an excellent addition to this deck. :) Similar to propaganda, but it is a W or 2 life instead of 2 mana.

wow... just wow. this deck is pure evil. Love it. :)

if scourge is your win-con, splinter twin might not be a bad side card.

oh random thought... perhaps druids repository would do somewhat you had wanted mana bloom to do.

well I looked at imposing sovereign and thought of it. seeing as how you might have been looking to replace mana bloom.

blind obedience. :)

Cool, I will check those out. Thanks. :)