The Pokmon Company doesnt say how long matches will last, but it wouldnt be surprising if they were around 10 15 minutes
LEDE-EN082 Battleguard Echoes Continuous Spell Card When this card is activated: You can add 1 Level 5 EARTH Warrior monster from your Deck to your hand, then discard 1 card
The leftmost and rightmost Spell & Trap Zones can optionally be treated as "Pendulum Zones" by placing Pendulum Monsters there, allowing players to use Pendulum Effects and perform Pendulum Summons
Key features: Genre: TCG Card Game Battle Origin: Japan Number of Players: 1 2 System Support: Online and offline play Manufacturer: Konami Developer: KONAMI Release Dates: JP: April 25, 2019 US: August 20, 2019 UK: August 20, 2019 Media: Nintendo Switch (data size: 1.4 GB) PEGI/ESRB Rating: 7/T teen Yu-Gi-Oh
Thus, the players always found what they liked
However, given its status as a secret card, its nice to add to your virtual binder