Your search for "Armor Sliver 4" revealed the following:
Heroscape: Secrets of the Citadel - Bleakewoode's Bane: Zelrig Remastered Army Expansion Premium Painted (Pre-Order)
Renegade Game Studios
$40.95
Expansion for G.I. JOE Heroscape: Rumble at the Rift Battle Box / Heroscape Marvel: The Conflict Begins / Heroscape Master Set: Battle for the Underdark / Heroscape Master Set: Age of Annihilation / Heroscape Master Set: Rise of the Valkyrie...
Heroscape: Secrets of the Citadel - Bleakewoode's Bane: Einar High Command Remastered Army Expansion Premium (Pre-Order)Painted
Renegade Game Studios
$89.95
Expansion for G.I. JOE Heroscape: Rumble at the Rift Battle Box / Heroscape Marvel: The Conflict Begins / Heroscape Master Set: Battle for the Underdark / Heroscape Master Set: Age of Annihilation / Heroscape Master Set: Rise of the Valkyrie...
Heroscape: Secrets of the Citadel - Bleakewoode's Bane: Awakened Ancient of the Umbral Covenant Army Expansion Premium Painted (Pre-Order)
Renegade Game Studios
$82.95
Expansion for G.I. JOE Heroscape: Rumble at the Rift Battle Box / Heroscape Marvel: The Conflict Begins / Heroscape Master Set: Battle for the Underdark / Heroscape Master Set: Age of Annihilation / Heroscape Master Set: Rise of the Valkyrie...