Spectre is a melee character. Her primary attribute is agility. The hero is mainly taken to the easy lane as a carry. Most effective in the late game.
Thanks to the Haunt ability, Spectre is always ready to join a team fight even if she is far away from it. When fighting Spectre, enemies should keep close to each other, as her Desolate ability is especially effective against single units. Dispersion allows the hero to frontlane, which can be a deciding factor in the late game. Spectral Dagger allows the character to both escape from the pursuers passing obstacles on the way and catch up with the fleeing enemy. Aghanim's Shard upgrades the Dispersion ability, which enhances the character's frontlane potential. Aghanim's Scepter grants the hero the Shadow Step ability, which is a very formidable weapon that allows Spectre to instantly reach a single target unit.
Mercurial is a being of intense and violent energy who finds herself irresistibly drawn to scenes of strife as they unfold in the physical world. Her true mind reasserts itself until in the final moments of victory or defeat, she transcends matter and is restored once more to her eternal form.