Wanton Ransacking

Wanton Racking is a prophecy from Fated List of Minor Prophecies that states:

The son of the god of the dead shall someday slay various armored Wardens guarding key Underworld chambers.

It awards 3 to defeat the following mini-bosses:

Tartarus
 * Dire Inferno-Bomber
 * Doomstone
 * Wretched Sneak

Asphodel
 * Dire Voidstone
 * Megagorgon
 * Dire Skull-Crusher
 * Dire Spreader

Elysium
 * Dire Soul Catcher

Temple of Styx
 * Dire Bother
 * Dire Snakestone
 * Dire Gigantic Vermin
 * Dire Satyr Cultist