Ultra-Rare cards are the least-common cards in BattleForge and are differentiated by the platinum/blue-colored edition seal in the bottom-right corner of the card. Ultra-rares are acquired from booster packs or via trading (including the Marketplace). Every booster pack has either a Rare card or an Ultra-Rare, though only one-in-six booster packs includes an Ultra-Rare instead of a Rare.