KHZFrost

I see that you were able to find that, I would recommend lightning bolt over Frost Bite, It is just simply better. maybe even Dragon's rage channeler as it would make all of your noncreature spells allow you to remove dead draws from the top of your library.
If budget isn't an issue underworld breach is an amazing card here, allowing you to replay any spells you need in order to combo in a single turn.
I would also trade Sprite Dragon for Monastery Swiftspear, removes the need for blue and comes out a turn faster.

This is of course if you want the deck to be strictly more competitive, if you are just trying to build a deck for fun then I would say build it to your liking.

Is this for any certain format? how did this deck come to be?

Unfortunately it would count as both, but you could always check with your local play group since the deck is basically mono green with or without it

Oracle of nectars would not be legal in this deck since it also has white in its cost

That comment is from 2009

I have hundreds of decks on my account, I mostly only craft decks for myself to tinker with or my friends.

Lucky clover can only copy Adventure instant/sorcery spells, not normal instant/sorcery spells.

This is pretty solid, i would suggest maybe pyretic ritual over fire diamond.
It would let you play cards like ball lightning on turn 2, or let you get flameshadow conjuring out a turn early so you can use it more often.

While fire diamond isnt bad, it costing 2 mana and entering tapped, means that your turn 2 will just be you not really doing anything, or doing the same thing on turn 3, as to where pyretic ritual simply gives you an extra mana when you need it

Now it will probably have much better consistency since you can play it on turn 4, and use the creature to make sure you get it

Nova chaser seems like a very odd choice considering you need to remove an elemental for it to be played, and your only other elemental is also a 4 drop spark creature, requiring 8 mana just to play it

Whats with the random mono black lands

The point of running fetchlands over other lands in a mono deck or fetchlands outside your colors is to thin the deck, and get shuffles. This way you remove any late game land topdecks.

I would say Thornbite Staff would be a great addition to the deck, while it does cost mana unlike longbow, it can be used multiple times in a single turn, especially useful as a blocking mechanism, and in response removing multiple threats from the field. Sorcerer's wand is also an addition, being an almost exact duplicate of longbow, if not slightly better.

Not entirely sure if this is where I should ask. I am trying to craft a cheap deck involving either Overgrown Estate, or Dark Heart of the Wood. I was interested to see what you could come up with or suggestions for what I could do with them.

Other cards I already own that can be added into it without cost are
x2 Vraska, Golgari Queen
x2 Riftstone Portal
x3 Splendid Reclamation
x2 Life From the Loam
x2 Maelstrom Pulse

Tron refers to the Urza lands that generate a lot of colorless mana.

https://www.mtgvault.com/card/urzas-mine/9ED/
https://www.mtgvault.com/card/urzas-power-plant/9ED/
https://www.mtgvault.com/card/urzas-tower/9ED/

Having one of each on the field generates 7 mana instead of the 3 you would get from other lands you have.

I would drop mirror gallery , Ethersworn canonist, and try to up your more important cards to sets of 4 instead of 3. I too like the variety you can add by only having 3 of each, but it plays much more consistently having 4 of each.

Also Immortal sun Kind of counters your own Karn and Ugin, I would either drop that for another copy of both, or drop Ugin for another All is Dust.

Why 10 swamps when you will most commonly have mono blue cards or blue in general

I don't believe that is how it would work, unless they did double strike, all the damage is applied at once, not 1 at a time, so if its a 1/4 vs a 5/5, it only takes one for lethal, but only one damage would get thru it since it has 4 toughness.

Odric, lunarch marshal would be better than Concerted effort, he can spread deathtouch as well as first strike

Ah , my mistake, and no they are not that bad, but id rate running despise into a burn deck, or duress into an aggro creature deck

I don't think id ever run just one for the reason being legendary, same as a planeswalker, you can only have one but it is nice to have it in your hand or field, hand disruption could work but this was just a very first draft and didn't want to push the budget too high with inquisition or thoughtseize