Most played cards in Humans:

2 Decks
 ↓ Ancient Ziggurat
8 copies – 4 avg
↓ Cavern of Souls
8 copies – 4 avg
↓ Unclaimed Territory
8 copies – 4 avg
↓ Wasteland
8 copies – 4 avg
↓ Champion of the Parish
8 copies – 4 avg
↓ Meddling Mage
8 copies – 4 avg
↓ Mother of Runes
8 copies – 4 avg
↓ Noble Hierarch
8 copies – 4 avg
↓ Thalia's Lieutenant
8 copies – 4 avg
↓ Thalia, Guardian of Thraben
8 copies – 4 avg
↓ Aether Vial
8 copies – 4 avg
↓ Horizon Canopy
6 copies – 3 avg
↓ Sanctum Prelate
6 copies – 3 avg
↓ Auriok Champion
6 copies – 3 avg
↓ Containment Priest
5 copies – 2.5 avg
↓ Kitesail Freebooter
4 copies – 2 avg
↓ Orzhov Pontiff
4 copies – 2 avg
↓ Surgical Extraction
4 copies – 2 avg
↓ Luminarch Aspirant
4 copies – 2 avg
↓ Unsettled Mariner
4 copies – 2 avg