Here is the Best beginner Fire Deck for Beginners in Splinterlands, This is a very common deck and most people who started out recently would have used it at one point or another but for a beginner player who knows nothing about Splinterlands and wants to find a deck to start out with this a great choice.
Summoner
Now i would use Tarsa for all mana levels unless its like 12-13 mana but other than that its a great summoner.
Tank
Living Lava is a great Tank on of the best i would use this tank no matter the mana level.
