Most played cards in Spirits:

2 Decks
Drogskol Captain
8 copies – 4 avg
Supreme Phantom
8 copies – 4 avg
Mausoleum Wanderer
8 copies – 4 avg
Collected Company
8 copies – 4 avg
Path to Exile
8 copies – 4 avg
Spell Queller
8 copies – 4 avg
Selfless Spirit
8 copies – 4 avg
Noble Hierarch
8 copies – 4 avg
Deputy of Detention
6 copies – 3 avg
Horizon Canopy
6 copies – 3 avg
Misty Rainforest
6 copies – 3 avg
Thalia, Guardian of Thraben
6 copies – 3 avg
Aether Vial
4 copies – 2 avg
Rest in Peace
4 copies – 2 avg
Stony Silence
4 copies – 2 avg
Flooded Strand
4 copies – 2 avg
Hallowed Fountain
4 copies – 2 avg
Relic of Progenitus
4 copies – 2 avg
Negate
4 copies – 2 avg
Nature's Claim
4 copies – 2 avg