Most played cards in U/B Beats:

1 Decks
Underground River
4 copies - 4 average
Spell Snare
4 copies - 4 average
Remove Soul
4 copies - 4 average
Bottle Gnomes
4 copies - 4 average
Remand
4 copies - 4 average
Dreadship Reef
4 copies - 4 average
Extirpate
4 copies - 4 average
Ancestral Vision
4 copies - 4 average
Cancel
4 copies - 4 average
Watery Grave
4 copies - 4 average
Teferi, Mage of Zhalfir
3 copies - 3 average
Damnation
3 copies - 3 average
Last Gasp
3 copies - 3 average
Desert
3 copies - 3 average
Dimir Aqueduct
3 copies - 3 average
Mystical Teachings
3 copies - 3 average
Draining Whelk
2 copies - 2 average
River of Tears
2 copies - 2 average
Repeal
2 copies - 2 average
Brine Elemental
1 copies - 1 average