Most played cards in Mono Red Aggro:

1 Decks
Goblin Chainwhirler
4 copies - 4 average
Runaway Steam-Kin
4 copies - 4 average
Heroic Reinforcements
4 copies - 4 average
Goblin Banneret
4 copies - 4 average
Fanatical Firebrand
4 copies - 4 average
Sacred Foundry
4 copies - 4 average
Clifftop Retreat
4 copies - 4 average
Viashino Pyromancer
4 copies - 4 average
Lightning Strike
3 copies - 3 average
Dire Fleet Daredevil
3 copies - 3 average
Fiery Cannonade
3 copies - 3 average
Tocatli Honor Guard
3 copies - 3 average
Experimental Frenzy
3 copies - 3 average
Tajic, Legion's Edge
3 copies - 3 average
Integrity // Intervention
3 copies - 3 average
Shock
2 copies - 2 average
Banefire
2 copies - 2 average
Fight with Fire
2 copies - 2 average
Rekindling Phoenix
2 copies - 2 average