So let's you have a trio deck (let's use my time/earth/aether). It has time towers, 3x aether towers, and mark of earth. It has 6x quicksands from earth and 2x TU from aether (in one version). It has eternities, anubii, silurian dragons, and *flying weapons*.
It's now a rainbow deck? Even though it only uses 3 types of quanta, no quantum towers, and no novas? And in reality it really only makes a lot of use with time; earth and aether are simply support elements?
Yes. It has cards from 4 different elements, therefore it's a rainbow. What cards it has is irrelevant.
I assume Scaredgirl meant "What
quanta it has is irrelevant."
I find myself disagreeing with the new definition for the opposite reason from PuppyChow: pillars and marks whose quanta are used only for abilities. Marks because they're the first indication to my opponent of my deck's quanta, and pillars... probably because I've seen them called lands, and lands in Magic are colorless.
If I understand correctly, I now have a deck which I consider mono-air, but SG would call it a trio-deck (air/life/fire) because it contains emerald pillars so my FFQs can generate fireflies and burning pillars to ignite unstable gas. If I removed the burning pillars and changed my mark to fire, we'd agree that it was a duo-deck, but I'd call it fire/air and SG would call it air/life. And we agree that I have a mono-water deck -- SG would say it was at one or two points a rainbow deck (water/death/air/aether), but when that happened I replaced a sapphire pillar, a bone pillar, a wind pillar, and an aether pillar with four quantum pillars, and it now contains only water cards and quantum pillars.
I do have one deck that is definitely not mono, because I couldn't resist using the rare cards I won from the slots: my fire deck contains light pillars and a Miracle. And my first deck was undeniably a life rainbow (not-entropy), but so bad that I deleted it -- including my other rare non-weapon, a Shard.
Also, because I was looking at the accounts that have these decks, I just won my first card from the oracle: a Blessing for my water deck. I'll keep it mono.