1.
Nightmare. All sorts of big (or HUGE, in the case of
Kolos) monsters, and stop-opposing-bonus is amazingly useful.
2.
Berzerk. It's "The Shining" meets uncontrollable psychotic rage--what's not to like? Managed my first (and only) 525 points in Deathmatch with a
Berzerk/
Nightmare/
Ambre deck.
3.
Vortex. Cool theme, cool bonus, some of the best artwork in the game. Still saving up for
X-0DUS. . .
4.
Sakrohm. My first major clan. Like the oddball them, as well as the truly alien aliens (Grax, Skrum, Trimk).
5. Let's give
GHEIST some love here. NOT an easy Clan to play, especially since Stop-Bonus beats Stop-Ability. Tremendously satisfying, though, when you can shut down cards (like
Kolos or Grax) that you absolutely hate. They're also obscure enough that you can sometimes give your opponent a real surprise: "What do you mean my
Kinjo didn't kill you?"