Your search for "overwhelming instinct 276" revealed the following:
Overwhelming Instinct (ONS) from Onslaught, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Ron Spears Card Text:Whenever you attack with three or more creatures, draw a card.
Overwhelming Instinct (Foil) (ONS) from Onslaught, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Ron Spears Card Text:Whenever you attack with three or more creatures, draw a card.
Overwhelming Instinct (SCD) from Starter Commander Decks, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Ron Spears Card Text:Whenever you attack with three or more creatures, draw a card.