Your search for "Diamond Duston MACR-EN080" revealed the following:
Diamond Duston - MACR-EN080 - Common - 1st Edition from Maximum Crisis 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:When a card(s) on the field is destroyed by battle or card effect: Special Summon "Duston" monsters from...
Diamond Duston - MACR-EN080 - Common - Unlimited from Maximum Crisis Unlimited, available at 401 Games Canada. Rarity: Common Card Text:When a card(s) on the field is destroyed by battle or card effect: Special Summon "Duston" monsters from your Deck...