Your search for "confounding conundrum 326" revealed the following:
Confounding Conundrum - Extended Art (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Bryan Sola Card Text:When Confounding Conundrum enters the battlefield, draw a card.Whenever a land enters the battlefield under an opponent's control,...
Confounding Conundrum - Extended Art (Foil) (ZNR) from Zendikar Rising, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Bryan Sola Card Text:When Confounding Conundrum enters the battlefield, draw a card.Whenever a land enters the battlefield under an opponent's...