Você pode trocar elas na NPC Avril.

As skulls coloridas dropam dos seguintes bosses.

• Orshabaal (White Skull)
• Ghazbaran (Yellow Skull)
• Morgaroth (Red Skull)
• Zoralurk (Green Skull)
• Omrafir (Orange Skull)
• Gaz’Haragoth (Black Skull)