I use this card’s effect, but there are either no black Digimon cards with play costs of 4 or less among the revealed cards, or there is one, but I choose not to play it. Do I discard this card instead of placing it in my battle area?

No. Whether or not you play a Digimon with this card’s effect is irrelevant. You still place it in your battle area.

Pride Memory Boost! rulings (BT7-105)

1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: [Main] Reveal the top 3 cards of your deck. You may play 1 black Digimon card with a play cost of 4 or less among them without paying its memory cost. Trash the remaining cards. Then, place this card in your battle area. [Main] Delay ・Gain 2 memory.
Security effect: [Security] Place this card in the battle area.

Official Q&A

I use this card’s effect, but there are either no black Digimon cards with play costs of 4 or less among the revealed cards, or there is one, but I choose not to play it. Do I discard this card instead of placing it in my battle area?
No. Whether or not you play a Digimon with this card’s effect is irrelevant. You still place it in your battle area.
Ruled Mar 28, 2024

Got a line that uses Pride Memory Boost!? Map it in the builder and share it with a link.

Questions and answers are Bandai's official rulings, collected and translated by the DigimonCardGame Wiki community and reused here under CC BY-SA. Card names and card text are © their respective publishers; Combalo is not affiliated with Bandai.

Pride Memory Boost! rulings (BT7-105)

1 official ruling from Bandai, last ruled Mar 28, 2024. Straight answers to how this card actually resolves.

Effect: [Main] Reveal the top 3 cards of your deck. You may play 1 black Digimon card with a play cost of 4 or less among them without paying its memory cost. Trash the remaining cards. Then, place this card in your battle area. [Main] Delay ・Gain 2 memory.
Security effect: [Security] Place this card in the battle area.

Official Q&A

I use this card’s effect, but there are either no black Digimon cards with play costs of 4 or less among the revealed cards, or there is one, but I choose not to play it. Do I discard this card instead of placing it in my battle area?
No. Whether or not you play a Digimon with this card’s effect is irrelevant. You still place it in your battle area.
Ruled Mar 28, 2024

Got a line that uses Pride Memory Boost!? Map it in the builder and share it with a link.