I have a maximum of 13 cards. I know it isn't what you wanted and I'm pretty sure you will decline but for Portal? All are common and most are repeated.
Here they are: http://steamcommunity.com/id/nightmar3und3ad/inventory/
1 decade ago
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Closed 7 years ago.
New Bundles
Steam
Inventory Gifts
Portal (Sold)
Steam Keys
Serious Sam HD 1
Serious Sam HD 2
Hard Reset
Brutal Legend
Rocketbirds
Eets Munchies Beta
H/B Gift URLs
FEAR 2 (Sold)
FEAR 3 (Sold)
Guardians of Middle-Earth + Guardians of Middle-earth: Smaug's Treasure DLC
Jamestown
Origin keys
Dead Space
Dead Space 3
Burnout: Paradise City
Crysis 2
Medal of Honor
Mirror's Edge
Command & Conquer: Red Alert 3 - Uprising
Please reply here with your offers (Games, Cards, DotA2/TF2 Keys or Ref), but feel free to add me. Thanks! =)