Board Thread:Plants vs. Zombies Heroes/@comment-5760976-20160721113646/@comment-25089892-20160722100122

I'm afraid there is no reason to grind for gems in multiplayer once you reach Gold League. You basically have to win at least 20 games (in a row!) to get these 50 gems. You can just wait for quests, and eventually get premium packs on basically every second day.