I know there was a list around a year ago that ran harmonize and Garruk, Primal Hunter as well as stormbreath dragon and thundermaw hellkite that won a tourney in toronto area. The issue with Harmonize was you would cast it and you could have the cards you need but no mana to do anything with it until next turn. Also around that time people were tinkering with Outpost Siege for card draw. Then Chandra, Torch of Defiance came out and its better than all those cards so only reason to run the others would be budget concerns.
The thing about this nissa into P&K is that we want to be doing disruption with blood moon or LD T2 and T3 then playing our threat. Playing it backwards with threats then LD is not going to work consistently. That is the core to this archetype is the early mana denial.
if you want to work with GDD you certainly need to change the make up of your spell suite. Blood Moon may not even work that well and becomes a 1 or 2 of, while you focus on re-using land destruction or value cards like molten rain or pulse of murasa alongside the usual suite of stone rains. You'll be dropping X value spells because they just don't work with your new plan. Maindeck bolts,or even Exquisite Firecrafts are attractive. Beast Within becomes questionable with so many red anti land options. Sweltering Suns becomes a super contender with the ability to cycle and then be used from the GY.
I disagree on the Moon assessment. While Goblin wants more 3 or less spells, Moon is too good to remove. I run 4 Moons and 3 Goblins and have had no problems with it.
When I ran GDD i found there was a shortage of slots for targets. 2-3 more spell targets may not seem like much, but its like playing Delver with 25 vs 28 instants/sorceries in the deck. You can feel it across a large number of games. Moon doesn't become bad per se, but it becomes less good compared to maximizing your synergy. I do believe I was last experimenting with how many Acid-Moss I wanted versus Moons, both of which aren't GDD targets and are certainly strong effects in the deck overall.
And.... that's how I ended up not using GDD in the end, because some of the strongest spells just don't work with the threats, and I didn't like to play GDD with no targets, which will happen very often when your main deck already has 4 moon, 10 ramp and 8-10 other threats taking up 24-26 slots.
this is basically how i felt about gdd. i tended to have to pay it without generating value and it felt wasted every time. plus it turns your opponents grave hate on. the more cards you can obsolete from your opponent, the better.
But also you could think that you are making them think about more angles to defend. If they can have a narrow focus it makes it much easier to play our deck.
The dual red shouldn't be a problem. Some versions have people running Molten Rain which has the same cost. The probelem i see is that Fulminator only targets non-basics where often times the basic land is what we want to destroy.
Has anyone tinkered with Fog as a way to hold off if we struggle to find our threats? I am thinking this allows us to do our LD plan early and bridge to when we get a finisher or draw a Primal to tutor for a finisher or, if going with Garruk, PH, getting to ultimate.
The thing I would encounter when playing 4 GDDs was being in a position where I did not always have something in the yard to recast and then it is a very expensive somewhat evasive 4/4. Curious about others thoughts on this but I really agree that some dark dwellars are important to kick in the LD late and turn a game around.
But also you could think that you are making them think about more angles to defend. If they can have a narrow focus it makes it much easier to play our deck.