Full Tempest Shadow Thump Box.
If you combine 10 of any of the following Shadow Equipments which are refined to +7 or higher, you can obtain one of Full Tempest Shadow Earring, Full Tempest Shadow Pendant, Full Tempest Shadow Shoes or Full Tempest Shadow Armor randomly:

Tempest Shadow Shoes,
Tempest Shadow Shield,
Magic Executioner Holy Water Shadow Armor,
Magic Corrupted Exorcist Shadow Armor,
Magic Vibration Dragon Killer Shadow Armor,
Magic Scissor Hunting Shadow Armor,
Magic Fishing Insect Net Shadow Armor,
Tempest Shadow Earring,
Tempest Shadow Pendant,
Magic Executioner Shadow Weapon,
Magic Exorcist Shadow Weapon,
Magic Hunting Shadow Weapon,
Magic Insect Net Shadow Weapon,
Magic Fishing Shadow Weapon,
Magic Dragon Killer Shadow Weapon,
Magic Corrupted Shadow Weapon,
Magic Vibration Shadow Weapon,
Magic Holy Water Shadow Weapon,
Magic Scissor Shadow Weapon,
Magic Spirit Executioner Shadow Weapon,
Tempest Shadow Weapon,
Tempest Shadow Armor,
Magic Executioner Holy Water Shadow Weapon,
Magic Fishing Insect Net Shadow Weapon,
Magic Scissor Hunting Shadow Weapon,
Magic Vibration Dragon Killer Shadow Weapon,
Magic Corrupted Exorcist Shadow Weapon.

The refine level of an item that becomes a material does not affect the result.