Defensive lightning Obelisk: place a 17-block gold-brick monument that auto-fires energy bolts at hostile and provoke-able creatures in a configurable 3D cube radius. Custom sounds, owner-protected, craftable.
Co-op revival: lethal damage drops a player into a downed state instead of killing them. A teammate breaks the gravestone to revive. Downed players teleport to limbo so NPCs lose aggro until rescue or timeout.
