Would it be possible to use field cards in this deck, namely Mystic Plasma Zone or Luminous Spark?

It would definately be possible to use either Luminous Spark or Mystic Plasma Zone in this deck.

Elemental Mistress Doriado would gain from any of these Atribute Specific Field Spells: Luminous Spark, Umiiruka, Molten Destruction, Rising Air Current, or Gaia Power.

Luminous Spark would probably be the most useful, as it can pump Elemental Mistress Doriado to 1700 attack, as well as being able to boost many of the other Element monsters in the deck. Element Saurus is one of the monsters that it would not be able to boost however, and it is one of the strongest as it combines the 500 attack increase with effect negation.

Another Field Spell that would work is A Legendary Ocean. This would drop the Elemental Mistress Doriado in your hand to Level 2. However you are most likely going to summon Elemental Mistress Doriado by tributing a Manju of the Ten Thousand Hands, so dropping the Mistress' level by 1 won't be too much of an advantage.

My bad, I meant to say if it's suggested. I know I can use the field spells, but I was jsut wondering how effective it might be. I never planned on A Loegendary Ocean because of the star count not making a difference for the ritual summon. But I was think more Mystic Plasma Zone since Luminous Spark raises Doriado's ATK, and thus out of the bounds of Heart of Clear Water. In addition, some of my main hitters (Saurus, Soldier, Doom, and Valkerie) can get a boost.

Why would you use Mystic Plasma Zone. Doriado is everything but Dark.

That is the reason, from my earlier post. Heart of Clear Water.

Edit: And yes, I know Valkerie is light. I said some of my hitters can be affected by Mystic Plasma Zone, but I understand Valkerie doesn't count. That's why I said "some." But she's still a heavy hitter of mine, and I made the change in the above quote anyway.

The one monster I have been heavily considering for the Element Deck I'm building is Mask of Darkness. I know this monster is generally frowned upon because it can only get back 7-10 cards from your deck. However in a deck that is focusing on the Element monsters and Elemental Mistress Doriado in particular, I think this little Fiend would be valuable.

Now you can not only abuse the 3 Fu-Rin-Ka-Zans you have in your deck, you can also use them over and over again. This should be absolutely brutal. Whether you are draining your opponent's resources or adding to your own.

There seems to be a good potential for card advantage in this deck once you get over the initial shock of summoning Elemental Mistress Doriado. I'm going to really have to invest some time in finalizing my deck over the next few days.

I think this is one of the few decks that probably will need a Mask of Darkness more than a Magician of Faith. A special deck I tell you. All that is needed is a way to keep her on the field (Heart of Clear Water) or have a Fulfillment of the Contract ready when you want her to return from the Grave. Last Will works magic in this deck also. Pretty much every monster is eligible for retrival in this deck.

Actually I'd shy away from the field spells. Since most of the meta game is a Chaos variant type of deck, either Luminous Spark or Mystic Plasma Zone will bump up your opponent's monsters too much. Even if your Element themed deck added BLS since it conviently runs so many Lights and Darks, I think the advantage would go towards more of the standard Chaos variants and maybe some of those Zombie ones as well.

For someone who has been awaiting the arrival of this card, you don't seem to be too knowledgeable of the actual name of the card. It is Elemental Mistress Doriado, and the ritual spell card it Doriado's Blessing. I have a deck based on this card.

We all do, it's just we don't like the name Doriado, that's why we say Dryad instead.