Legion

[storyteller]

  Creature
8 
X|X
X is equal to the number of Legion in Play.


alternatively

Legion combines with itself, similar to Chimera

Legion has Attributes equal to the Square of the number of Legion in the stack. In this case, it costs 4


so basically, Legion the one is many, in which it becomes really powerful by playing All of them, exponentially.
it has attributes based on how many in play.

[Drake_XIV]

For the latter, that idea has been submitted, I believe.  I'll search for the link.