Your search for "Battlefield Promotion 7" revealed the following:
Contents: Booster Pack [OP-15] x2 Booster Pack [OP-16] x2 Promotion Card x2 (2 types)
The Grand Plaza - 293a/298 - Promo from Riftbound Promotional Cards, available at 401 Games Canada. Rarity: Promo Finish: Foil Artist: TUTU Card Text:When you hold here, if you have 7+ units here, you win the game.
Hanweir Battlements // Hanweir, the Writhing Township - Prerelease Promo (Foil) (EMN) from Eldritch Moon, available at 401 Games Canada. Rarity: Rare Finish: Foil Artist: Vincent Proce Card Text:T: Add C to your mana pool.R, T: Target creature gains haste...