The Phantasmal Ruin is a craftable post-Moon Lord non-consumable javelin. It is the upgrade of the Luminous Striker and the final upgrade to the Spear of Paleolith. It automatically throws a gravity-ignoring spear that leave trails of floating lost souls. The lost souls float around and home onto nearby enemies, dealing half of the weapon's base damage. Upon contact with an enemy, the spear breaks and unleashes a wave of 15 small phantom spirits outward from the spear which briefly idle around before aggressively homing into an enemy. If a phantom spirit is present, the next hit will not unleash any more.
Performing a stealth strike with the Phantasmal Ruin will cause the next spear thrown to release a trail of translucent spear clones instead of lost souls and at a faster pace. The spear clones home onto enemies and fade away over time.
Its best modifier is Flawless.