How to unlock cards in battle booster?

[A Tea 100]

how to unlock its?

[GB EX]

Win games in multiplayer (aka online duels).
If you don't have all the other cards unlocked, you may get a booster from one of those sets, so you've been warned.

[JMacron]

It is largely impossible to win a multiplayer duel, in my experience a losing player will simply quit the match, and defeating the A.I. left in their place yields no boosters.

[JMacron]

wait, I think the A.I. thing is a glitch on my end
anyone experiencing anything similar?

[GB EX]

That sounds like a glitch to me, bc beating the multiplayer A.I. (as many others have reported) should still yield a booster reward.

[Dragman]

as long as you beat the ai that replaced the player you should still get a booster. i dont think ive ever gone through a whole match without my opponent quitting before i finish them off and ive gotten all the boosters.

[D#]

I have won 2 multiplayer games and gotten nothing for it.. kind of irritating.

[JMacron]

I started receiving packs from A.I. opponents a few days ago, I still don't know the cause or why it stopped.