Dark Blastoise (4/110) [Legendary Collection] BT-12 they are thinking of these

they are thinking of these sleeves

Set: Aquapolis Type: Grass Rarity: Rare Retreat cost: Colorless

Set: Commander's Arsenal Type: Enchantment Rarity: Rare Cost: {1}{G} At the beginning of your draw step

Set: Urza's Legacy Type: Creature — Goblin Artificer Rarity: Rare Cost: {R} {T}: Choose target artifact a player controls and target artifact card in that player's graveyard

Set: Sun & Moon: Black Star Promos Type: Fire Rarity: Black Star Promo Retreat cost: Colorless

Dark Blastoise (4/110) [Legendary Collection] BT-12 they are thinking of theseSet: Legendary Collection Type: Water Rarity: Holo Rare Retreat cost: Colorless,Colorless