Your search for "Diplomatic Escort 74" revealed the following:
Diplomatic Escort - MMQ Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Rebecca Guay Card Text:U, T, Discard a card from your hand: Counter target spell or ability that targets a creature.
Diplomatic Escort (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Rebecca Guay Card Text:U, T, Discard a card from your hand: Counter target spell or ability that targets a creature.
Diplomatic Escort (Foil) (MMQ) from Mercadian Masques, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Rebecca Guay Card Text:U, T, Discard a card from your hand: Counter target spell or ability that targets a creature.