Most played cards in Dragonstorm:

2 Decks
Lotus Bloom
8 copies - 4 average
Ponder
8 copies - 4 average
Seething Song
8 copies - 4 average
Steam Vents
8 copies - 4 average
Remand
8 copies - 4 average
Rite of Flame
8 copies - 4 average
Bogardan Hellkite
8 copies - 4 average
Dragonstorm
8 copies - 4 average
Pyroclasm
6 copies - 3 average
Sleight of Hand
6 copies - 3 average
Gigadrowse
5 copies - 2.5 average
Telling Time
4 copies - 2 average
Peer Through Depths
4 copies - 2 average
4 copies - 2 average
Sun Droplet
4 copies - 2 average
Cascade Bluffs
4 copies - 2 average
Shattering Spree
4 copies - 2 average
Echoing Truth
4 copies - 2 average
Hurkyl's Recall
3 copies - 1.5 average
Stifle
3 copies - 1.5 average