Most played cards in Niv-Mizzet, Parun:

2 Decks
Logic Knot
2 copies - 1 average
Lightning Bolt
2 copies - 1 average
Mana Leak
2 copies - 1 average
Miscalculation
2 copies - 1 average
Mental Misstep
2 copies - 1 average
Izzet Charm
2 copies - 1 average
Into the Roil
2 copies - 1 average
Counterspell
2 copies - 1 average
Cryptic Command
2 copies - 1 average
Force Spike
2 copies - 1 average
Force of Will
2 copies - 1 average
Mizzium Mortars
2 copies - 1 average
Ponder
2 copies - 1 average
Curiosity
2 copies - 1 average
Chandra, Torch of Defiance
2 copies - 1 average
Jace, the Mind Sculptor
2 copies - 1 average
Search for Azcanta
2 copies - 1 average
Treachery
2 copies - 1 average
Sweltering Suns
2 copies - 1 average
Spell Snare
2 copies - 1 average