Before: [Your Turn] [Once Per Turn] When you would play a level 4 or higher Digimon card with [Bagra Army] trait, by placing up to 3 purple Digimon cards from under your Tamers in the digivolution cards of the Digimon card played, reduce the memory cost of that Digimon by 2 for each card placed.
After: [Your Turn] [Once Per Turn] When you would play 1 level 4 or higher Digimon card with [Bagra Army] trait, by placing up to 3 purple Digimon cards from under your Tamers in the digivolution cards of the Digimon card played, reduce the memory cost of that Digimon by 2 for each card placed.
Read as the errata when playing.