Mage Knight

Oak Warrior (Rebellion?)
Living Elemental (Rebellion)
Oak Warrior (Sorcery)
Tanglewood Spirit (Whirlwind)
Deadwood Golem (Dungeons)
Oak Mage (Sorcery)
Forest Nymph (Uprising)
Impaler (Uprising)
Horrorclix Pod Zombie (The Lab)

Iron Lung (Lancers)
Submersible Golem (Minions)

Oracle of Rokos (Sorcery)
Solonavi Shade (Sorcery)

En-zar  (Pyramid)
Desert Bladestalker (Pyramid)
Hawk Guardian (Pyramid)
Hooded Assassin (Pyramid)
Jackal Guardian (Pyramid)

Deep Spawn (Rebellion)
Shelled One (Whirlwind)

Amazon Warrior (Omens)
Athene (???)
Blood Priestess (Sorcery)
Brass Commander (Minions)
Cult Enforcer (Sorcery)
Delphana Master (Sorcery)
Demolishing Ape (Dungeons) / Desert Ape (Pyramid)
Fang Worm (Omens)
Hydra Serpent (Dungeons)
Infantry Golem (Mage Knight)
Khamsin Pistoleer (Omens) / Khamsin Sniper (Minions)
Lightning Minion (Dragons Gate)
Succubus (Uprising)
Thorn Crawler (Whirlwind)
Troll Brawler (Rebellion)
Water Minion (Dungeons)
Xandressan Captain (Minions)

To get:
Malava (Sorcery)
Oracle Daheia (Sorcery)
Oracle Kastali (Omens)
Poisonous Salamander (Dragons Gate)
Pyre Spirit (Nexus/Unlimited)
Scale Servant (Dragons Gate)
Seeker Azruk (Pyramid)
Seeker Elydia (Pyramid)
Seeker Mock (Pyramid)
Shadow Servant (Dragons Gate)
Slag Troll (Dragons Gate)
Swarmling (Uprising)
Wave Spawn (Omens)
Wind Minion (Dungeons)