WeaponOut/Psy Wave

The Psy Wave is a Hardmode magic weapon that fires a stream of slow-moving psionic orbs. The player can hold left-click to keep firing the orbs, however releasing it will make all existing orbs on the screen disappear. The orbs will also disappear upon hitting a tile or after traveling for about 8 seconds. The orbs will also "follow" the screen, which will make them keep their position even if the player is moving.

As it has no knockback, its best Modifier is Demonic.