Your search for "nullmage shepherd 774" revealed the following:
Nullmage Shepherd (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Campbell White Card Text:Tap four untapped creatures you control: Destroy target artifact or enchantment.
Nullmage Shepherd (Foil) (RAV) from Ravnica: City of Guilds, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Stephen Tappin Card Text:Tap four untapped creatures you control: Destroy target artifact or enchantment.
Nullmage Shepherd (KHC) from Kaldheim Commander, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Campbell White Card Text:Tap four untapped creatures you control: Destroy target artifact or enchantment.
Nullmage Shepherd (RAV) from Ravnica: City of Guilds, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Stephen Tappin Card Text:Tap four untapped creatures you control: Destroy target artifact or enchantment.
Nullmage Shepherd - Elusive Elves (Foil) (SLD) from Secret Lair Drop, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Campbell White Card Text: Brain Dead: LandsTap four untapped creatures you control: Destroy target artifact or enchantment.