Most played cards in Grixis Delver:

1 Decks
Thought Scour
4 copies - 4 average
Delver of Secrets
4 copies - 4 average
Polluted Delta
4 copies - 4 average
Lightning Bolt
4 copies - 4 average
Bloodstained Mire
4 copies - 4 average
Snapcaster Mage
4 copies - 4 average
Fatal Push
3 copies - 3 average
Ceremonious Rejection
2 copies - 2 average
Nihil Spellbomb
2 copies - 2 average
Watery Grave
2 copies - 2 average
Kolaghan's Command
2 copies - 2 average
Dispel
2 copies - 2 average
Extirpate
2 copies - 2 average
Crumble to Dust
2 copies - 2 average
Collective Brutality
2 copies - 2 average
Anger of the Gods
2 copies - 2 average
Creeping Tar Pit
2 copies - 2 average
Cryptic Command
2 copies - 2 average
Terminate
2 copies - 2 average
Opt
2 copies - 2 average