Mage - casting and movement

Hello fellow Warriors.
I noticed that my mage of alahan can`t cast a spell and than move allthough i can move and than cast a spell.
A worgen battlemage in a game recently did move, cast a spell and than move again, out of my reach.
Now my qwuestion is, why can`t i do that with my alahan mage?
Cheers
Daniel

Probably because he was a warrior-mage and not "just" a mage.

Warrior-mage: can cast and attack in the same turn, can cast and then move. However can only cast 1 spell x turn, slow mana regeneration.

Mage: Can't move after casting, however can cast more than 1 spell x turn (e.g. one Alahan mage that accumulates mana for three turns and then more or less automatically kills any one of your units if you don't get him before (legendary excluded)).

yeah i thopught somnething along those lines, but couldnt find anything in the game stating something like that. must've been blind.
thx.