Resonance Scepter

The Resonance Scepter is a Hardmode, post-Plantera staff which has a chance of dropping from the Princess NPC. When used, it creates glowing pink circles at the cursor's location, which expand and then collapse into sparkles over the course of about 1 second. Rapid damage is dealt to any enemies within the circles throughout the animation, and they are knocked back away from the caster. It is not possible to summon the circles through blocks. The scepter in the player's hand also sparkles while it is used, emitting pink light.

Tips

 * This is a powerful magic weapon, but it requires every NPC to be present as that is the requirement for the Princess NPC to spawn.

Trivia

 * The Princess uses the same attack when threatened by enemies, although the staff is not shown.
 * The Resonance Scepter can be considered an indirect upgrade to the Inferno Fork as it is nearly functionally identical, has higher stats (besides knockback and the On Fire! DoT) and instantaneously reaches the location the player aims at. It can also create its projectile midair which the Inferno Fork cannot unless it makes contact with a target.
 * It can also be obtained before entering the hardmode dungeon, making for an easy upgrade from their current weapon with little effort if the player has obtained all NPCs so that the Princess can arrive immediately after killing Plantera.