Great game, the more I read it the better it gets.
This would suit 6mm really well, thematically speaking. And I think, if developed further, integrating the unit types to the special abilities for units, could create a basis for army lists and would bring a stronger setting for players to grasp. At the moment it's very agnostic and although that isn't a bad thing, I think it would really benefit from reining that in a bit. A dark fantasy/steampunk mix would be cool. That's what I pictured when I was reading over the rules. Something like SLUDGE, if you've read or played that game.
It's good to allow for some imagination, but I think telling people what they are playing with helps them get to grips with the game.
I would change it so that the ELAM reduction only occurs for each action performed after the first and the unit doesn't recover a point at the end of their activation. At the moment, a unit loses a point of ELAM, then regains it immediately after. Semantics, but would flow rules wise a little better. Could add a Rest action, that allows a Unit to regain a point of ELAM at the cost of moving or attacking.
The Wizard's ability only having a single use is a little disappointing. I get why, its a big boom, but I'd want my Wizard to be doing more. What if it was changed to costing more ELAM to use? Maybe 2 points? That way a Wizard is expensive ELAM wise due to the inherent costs of using its ability, and also restricted with the number of times it can cast.
Awesome stuff, with lots of further development potential. Good work!