Most played cards in Esper:

2 Decks
 ↓ Brainstorm
8 copies – 4 avg
↓ Swords to Plowshares
8 copies – 4 avg
↓ Ponder
8 copies – 4 avg
↓ Flooded Strand
8 copies – 4 avg
↓ Force of Will
8 copies – 4 avg
↓ Polluted Delta
7 copies – 3.5 avg
↓ Prismatic Ending
6 copies – 3 avg
↓ Teferi, Time Raveler
5 copies – 2.5 avg
↓ Snapcaster Mage
5 copies – 2.5 avg
↓ Void Rend
5 copies – 2.5 avg
↓ Containment Priest
4 copies – 2 avg
↓ Stony Silence
4 copies – 2 avg
↓ Tundra
4 copies – 2 avg
↓ Baleful Strix
4 copies – 2 avg
↓ Surgical Extraction
3 copies – 1.5 avg
↓ Narset, Parter of Veils
3 copies – 1.5 avg
↓ Consign to Memory
3 copies – 1.5 avg
↓ Spell Pierce
3 copies – 1.5 avg
↓ Underground Sea
3 copies – 1.5 avg
↓ Jace, the Mind Sculptor
3 copies – 1.5 avg