Most played cards in Sultai Delirium:

4 Decks
Evolving Wilds
16 copies - 4 average
Traverse the Ulvenwald
14 copies - 3.5 average
Kozilek's Return
12 copies - 3 average
Gather the Pack
12 copies - 3 average
Grapple with the Past
12 copies - 3 average
Sunken Hollow
12 copies - 3 average
Haunted Dead
12 copies - 3 average
Elder Deep-Fiend
12 copies - 3 average
Jace, Vryn's Prodigy
12 copies - 3 average
Prized Amalgam
12 copies - 3 average
Yavimaya Coast
11 copies - 2.75 average
Llanowar Wastes
11 copies - 2.75 average
Transgress the Mind
9 copies - 2.25 average
Pulse of Murasa
8 copies - 2 average
Languish
7 copies - 1.75 average
Ishkanah, Grafwidow
7 copies - 1.75 average
Ultimate Price
6 copies - 1.5 average
Vessel of Nascency
5 copies - 1.25 average
Liliana, the Last Hope
4 copies - 1 average
Grim Flayer
4 copies - 1 average