Buildwars
Buildwars (or Build Wars) is a common mocking term, referring to the game (paticularly PvP) being in a state in which the builds are more important than skill or tactics. This state is undesirable to most players as it causes matches to be frustrating, boring and predictable. This happens when powerful skills cannot be countered without building specifically to counter them. The more powerful, hard to counter, skills there are, the higher the degree of Buildwars. When the game is in this state, it can be likened to Rock, Paper, Scissors.
It is also commonly used as a verb; to buildwars someone is to predict what build they are going to run and run a perfect counter build to it - although this can also be done by luck or accident. An example would be to take multiple powerful hex removals when an opponent is expected to be running a hex-heavy team. This is also known as speccing the enemy team.