DedWards

I keep forgetting about the "your" part of Hidden Stockpile. Thanks for pointing it out.

I get it, but am not going to say until tablen fills out the Description, How to Play, and Tags.

Teferi's Puzzle Box is best suited for decks that plan to win off cards like Psychosis Crawler; Niv-Mizzet, the Firemind; and / or Cerebral Vortex.

Oh, and FYI, multiple Puzzle Boxes do stack.

Looking through the deck again. Not sure I like Heroes' Reunion and Predator's Rapport. Once off life gain effects, regardless of how much life they gain you, seems weak to me. I'd use their slots for search / draw effects to get to your more stable life gain cards instead, or missing combo pieces. Harmonize and Elvish Visionary are excellent green draw spells. Commune with the Gods "searches" for either a creature or an enchantment, both of which are combo pieces for you.

I'd also swap out Soulmender for Chalice of Life / Chalice of Death. Sure, it costs more mana, but it's not as vulnerable to removal and it supplies an alternative win condition.

Hardened Scales could be a good addition. With only one Hardened Scales out:
Spike Feeder enters with three +1/+1 counters and it's {2} mana abilitie removes one +1/+1 counter to add two +1/+1 counters (netting you one counter).
Each time you gain life, Ajani's Pridemate will gain two +1/+1 counters.
Sunbond gives +1/+1 counters equal to the amount of life gained plus one more.

If you swap out Armadillo Cloak for Unflinching Courage, this deck will be Modern legal.

Graypelt Refuge functions exactly like Blossoming Sands.
Kabira Crossroads gives you 2 life, and tapps for {W}, but enters the battlefield tapped.
Radiant Fountain also gives you 2 life, and enters the battlefield untapped, but only tapps for {C}.

Imo, Sprout Swarm, and to a lesser degree Scatter the Seeds, can be added to majority of the Fungi decks. Although, this hinges on on how many fungi you add that give bonuses for sacrificing Saprolings (which is a lot of the good ones).

I'm surprised to not see Mycologist at least mentioned. While not a Fungus itself (it's a Human Druid, and a colour shift of Elvish Farmer), it functions a lot like a Fungus. Sporesower may not increase its Spore counters production, but Sporoloth Ancient at least affects it. Plus, blocking a creature with a Saproling then sacrificing it for life is good.

Biggest problem I see is the mana requirement of your creatures. Cloud Key and Heartless Summoning only reduces the generic mana, meaning you still have to pay for the coloured mana.

Grinning Ignus is a deceptively bad card for this. Bouncing it to its own ability costs you {R} and even with Heartless Summoning and / or Cloud Key, you have to spend another {R} to recast it. It's ability only supplies one {R} for all your troubles, meaning you have to have an outside source for the second {R}.

Now, Heartless Summoning and / or Krark-Clan Ironworks with Myr Retriever is a good creature based Storm loop. Workshop Assistant could be added to this, but it requires either 2 Heartless Summoning or 1 Heartless Summoning + 1 Krark-Clan Ironworks to supply the loop.

You're lucky I replied. I normally ignore decks that don't use the Deck Description and / or How to Play sections.

I actually ran a similar deck, though mine was black and white, using Forbidden Orchard and Mercy Killing to give the opponent creatures, then Hissing Miasma and Batwing Brume to make them lose life each time they attack.

I do like coming up with the odd "evil" deck :) Glad you like it.

I did consider them all. The current choices are made from the need for efficiency over other gimmicks. Oh, and space restraints.

$25 is a very low budget. Good thing the card I want to suggest is only $0.50 a pop: Lashwrithe. Slapping a Lashwrithe on a Vampire Nighthawk results in awesomeness :P

Detention Sphere is a nice way to hose all the goblin tokens at one, but something like Dampening Pulse or Cumber Stone is a more permanent solution to that small problem. Ratchet Bomb can also work, but just like Detention Sphere, it's a once off effect.

FYI, you can't use Divinity of Pride, it's black. Being hybrid doesn't excuse it from being outside your Commander's colour(s).

Not a bad beginner deck. I only have one problem: Talara's Battalion. I personal experience has got me hating the card. I lost count how many times the Battalion was in hand without a second green card or without enough mana to cast it after another green card, and that was in a mono green deck. Also, the casting limiter feels a little difficult for a new player. Might I suggest Something like Strangleroot Geist or Kalonian Tusker in its place? They at least don't have the casting limiter.

No Tracker as this is Block Constructed.

I have two reasons for not including Panharmonicon. Firstly, it costs 4 mana, which is way too slow for the aggro I'm going for. Secondly, I don't have enough cards with etb's to warrant its ability. Greenbelt Rampager only gives energy if I have 0-1 energy, which only leaves Renegade Rallier. Renegade's ability with Panharmonicon out is awesome, but it's just not worth it to include a 4 mana artifact that is dead with almost all my cards.

The only fast land in colour is Inspiring Vantage, for red and white. With Attune with Aether and Aether Hub, I'm not sure I need a fast land. Only testing will tell for sure, and in order to test, I need to order some cards.

Kaladesh block only has two equipment: Inventor's Goggles, which auto equips to Artificers; and Torch Gauntlet. Both are commons and only give a small P/T boost. I guess vehicles took up most of the equipment slots as the work in a similar fashion. Seeing that you just got back into the game, I'm not sure you want to go further back than the Kaladesh block.

Here's hoping Amonkhet has some nice equipment.

As long as the card doesn't say Creature in its type line, even if it has an ability to become a creature, Negate can counter it. Imo, despite the heavy creature format, Negate is the best counter that's cheaper than 3 mana in Standard.

Paying {E}E}, if you have it, to keep Greenbelt is mandatory. Thus I would need something to drain my energy once I've assembled the combo.

Spending the excess Energy shouldn't be too difficult, but it could depend on the support cards. I'm thinking red and / or blue as secondary colours, red for the likes of Harnessed Lightning, and blue because it's usually better at assembling combo pieces.

Reservoir it is then. I shall inform my friend, but I'll only get to designing the full deck later. Thanks.