It's not that hard to get cards. For christ's sake, you could get two cards a week for the past 6 months. Assuming you logged on once a week and play a wee bit into a couple games, you'd have them all in no time.
People who play with Popo make me sick. There's isn't any strategy to playing him except "wow, I hope this hits!". If you want to gamble, go play internet poker, assholes.
Shotgun Deck: Leads with Rumiko with the Stoneheel Totem; Higashi with Mindreader's Chalice; Onimaru with Healing Salve. The Shotgun deck is name for the situation it's build to put people in. I can generally manuver people into being in the Far position with my Higashi at at least 80 energy. This gives them the painful choice to stand or withdraw. If I pick right, I either damage them for 65 plus 3 over 4 turns or I intercept for 75 damage. It's a 50/50 of chance of giving me a decisive lead early on.
 "Kongai"){kind=icon}
 "TextMate"){kind=icon}
 "BridgeCraft"){kind=icon}
 "Use Boxmen"){kind=icon}
 "Little Wheel"){kind=icon}
 "SHIFT 4"){kind=icon}
 "Spewer"){kind=icon}
 "Pillage the Village"){kind=icon}