Most played cards in Adeliz, the Cinder Wind:

2 Decks
Snow-Covered Island
10 copies - 5 average
Snow-Covered Mountain
7 copies - 3.5 average
Burst Lightning
2 copies - 1 average
Brute Force
2 copies - 1 average
Counterspell
2 copies - 1 average
Daze
2 copies - 1 average
Flame Slash
2 copies - 1 average
Fire // Ice
2 copies - 1 average
Abrade
2 copies - 1 average
Wingcrafter
2 copies - 1 average
Spellweaver Eternal
2 copies - 1 average
Spellstutter Sprite
2 copies - 1 average
Snapcaster Mage
2 copies - 1 average
Stormchaser Mage
2 copies - 1 average
Venser, Shaper Savant
2 copies - 1 average
Gitaxian Probe
2 copies - 1 average
Soul-Scar Mage
2 copies - 1 average
Lightning Bolt
2 copies - 1 average
Stifle
2 copies - 1 average
Spell Pierce
2 copies - 1 average