Metagaming
The term Metagame, like the terms postmodern and existentialism, gets thrown around a lot by pseudo-intellectuals who don’t actually know its meaning. The word metagame means, most simply, the types of decks that are being played in a geographic area. The metagame includes both deck archetypes and individually tuned decks. For example, the metagame for an area might consist of control decks. There might be one prevalent control deck, or a couple of different types, but control decks are being played the most overall. The metagame is what will determine whether your deck succeeds or fails.