A new troop, the Legion

The Legion will be a group of 5 soldiers (2 in the front, 3 in the back) and this troop is based of the legions of Rome. They will have at least 400 health at level 1 and about 1200 at level 6, damage they will deal will be 200(increasing with level though) and movement speed will be about giant speed.If the legion is killed they will split into 5 legionnaires with a fraction of the strength and health of the legion of a similar level. Now the question is, should this be an elixir-based or dark elixir-based troop?

A Legion was an individual troop, forming phalanx was one of their tactical formations.

Whats about a New troop which unites the barbarians into a Legion

Name:Zenturio
Cost:5000 Dark Elexi
Damage:0
Health:500 or 1000
Living room:5
Special: The Zenturio unites 10-20 barbarians into one legion , they get +10 damage +5 speed and + 60 Health the zenturio can Mark a point and the Legion attacks it together