Phantoms are powerful vampiric apparitions sequestered away in the Fields of Mourning. They will only be encountered if Melinoë ventures into one of their lairs.
Phantoms move quickly and constantly teleport, making them difficult to hit with slower weapons. They have a dangerous long-range vacuum attack that deals multiple hits, signaled by their arms opening wide; getting caught in these vacuums can easily result in Melinoë taking a large amount of damage. In melee, Phantoms will sometimes perform a downward strike with both claws.
Phantoms close the distance between themselves and Melinoë by lunging forward and swiping with one or both claws. These attacks have a long reach and a short cooldown, making them particularly dangerous.
In addition, Phantoms will heal themselves if their melee attacks hit, making it vital to evade their strikes at all costs.
Phantoms spawn exclusively as a mini-boss, and are accompanied by a host of Blight-Shades.
Combat
Vow of Shadow: If the Vow of Shadow is active, then the Phanthom will be accompanied by a shadow version of the Mourner. This copy is an Elite enemy with armor.
Codex entry