The final piece of the 7 piece puzzle that is Moonbeam and Shadowbeam’s family (One for each magical element), here we have a more appropriate design for Wandering Shadowstar, Shadowbeam’s mother and Moonbeam’s surrogate mother. (And one of Earthshaker’s ‘many’ sisters.)
Like her daughter, Shadowstar is a black mage, which inevitably caused a permanent change in her fur and hair pigmentation to take on a more darker tone than the usual norm among ponies.Think of it as the Priest ability ‘Shadowform’ in World of Warcraft.
I also thought a spear would fit her better than a scythe.