The Starcraft Card game
Hero classifications

Why:
So you know which cards are which type of units and can build accordingly (Heroes build like normal units).

Terran
Gui Montag-Firebat
Sarah Kerrigan-Ghost
Alan Schezar-Goliath
Jim Raynor-Vulture or Marine
Tom Kazansky-Wraith
Magellan-Science Vessel
Edmund Duke-Seige Tank
Hyperion-Battlecruser
Norad II-Battlecruser

Zerg
Torrasque-Ultralisk
Matriarch-Queen
Infested Kerrigan-Infested Terran
Unclean One-Defiler
Hunter Killer-Hydralisk
Devouring One-Zergling
Kukulza-Mutalisk or Guardian
Yggdrasill-Overlord


Protoss
Tassadar/Zeratul-Archon
Fenix-Zealot or Dragoon
Tassadar-High Templar
Mojo-Scout
Warbringer-Reaver
Gantrithor-Carrier
Danimoth-Arbiter