Only thing that defines a deck are the cards in it.
As big as you write it, SG, that's simply not true.
As much as you like 'facts', the fact is that these decks are
built to be played -- and thus the intended playstyle of the deck is literally the
only thing that people who want to discuss the deck are interested in -- and JMizzle's definition is the easiest way to determine what a decks' playstyle is.
If I post a deck that uses an Water Mark, Sapphire Pillars, Novas, Toadfish, Mind Flayers, Chrysora, and Freezes, your logic says that that is a duo-deck. But the style required to play the deck is a rainbow style of thinking -- because you need to maximize the use of as much of the quanta the Novas provide as possible, or you're wasting the card. There is no 'smaller element' to Mark for and balance against the Mark's quanta production -- and that's what "duo-deck" MEANS to the people who are looking at these decks.
In the end,
no player EVER looks at a deck and asks himself "What color are these cards when I put them down on the field?" --
but EVERYONE asks "How does this work?"And if it works like a rainbow deck (i.e. it creates and uses 4+ types of quanta therefore it's main concern is balancing quanta usage for efficiency's sake), then it's a damn rainbow deck, even if every card in there is either blue or purple.
JMizzle might not have intended to create a definition that backs up mine, but he did -- it's easy to tell exactly what kind of playstyle a deckbuilder intended if you first look at what kinds of quanta are 'intended to be used' by the creator.
If there's only one, it's a mono-deck, and your only concern is the order in which you play the cards.
Two, it's a duo-deck, regardless of if there is only one color of card in the deck (Lava Golems in an all Fire-card deck) or if there are FIVE colors of card in the deck (Pegasus, Purify (elite), Animate Weapon, Sundial (elite), and Spark in a deck that uses only Light and Air quanta. Hey, it could happen.) Now you have to be worried about consistency -- balanced decks tend not to work as well as splashed decks, so you try to minimize one element and rely heavily on the mark to power that element.
Three, and it's a trio-deck. Trio-decks basically HAVE to have one element that's restricted to one card powered by the mark, and then two more that can be balanced or imbalanced as the need comes. At this point, you'd better be stringing together a strong combo out of your three elements, or it's not worth it.
Four or more, and it's a rainbow deck, because at that point you're balancing so many resources that you have to be constantly aware of which ones you're draining and how fast so that you can actually play the cards you put in your deck.
Those are FACTS of deckbuilding and game theory, not some irrelevancies like the position of Sagittarius or the prettiness of the card art. And more importantly, they are
the only FACTS that players and deckbuilders
actually give a rat's ass about when they click into the "Decks" section. (Well, that and "can I farm FGs with it?" ;p )