Hello all Friends...
If you are looking to upgrade the cards or want to buy new cards from market, you should look at the new cards added in Fire Splinter (from Untamed and Reward series).
There are good number of cards in fire team with blast ability. Some of then has the ability from Level one and some will get after upgrading to up level.
Check out the below list from old and new cards
Exploding Dwarf
Exploding Dwarf is a card from reward card series and has Blast ability from level one.
The only weak point of this card is health that is 1 only. With one health of can not be used in first position but at higher levels it got the retaliate ability so I have seen that some players used it in first position as it attack back if melee monster attack him.
The one positive point of this card I'd speed which is very decent. It take 5 mana to summon. Card is very usefull rules like melee monster can attack from any position or all melee attack has sneak ability.
Fire Demon
Fire Demon is a card from Beta/Alpha series. It a range attack and at levels three it unlock the blast ability also. I am using this card in almost every battle with Fire Splinter. It take four mana to summon the card.
Elemental Phoenix
Elemental Phoenix card is also from Alpha/Beta series and rarely wise it's a Legendary card. So ofcourse the cost of card is also high. It has Flying ability from first level and unlock the blast ability at level two. The cost seven mana to summon so can not fit in low mana battles. Card has a good speed. Because of the flying ability very usefull for earth quack rules set.
Fire Elemental
Fire Elemental is a card from the Untamed series. Rarety wise it belongs to the rare category. It has blast ability from level one itself. The type of attack is ranged so can be used in almost all battles. It cost five mana to summon the card. The only low side of the card is low life.
Pyromaniac
Pyromaniac is a card from Untamed series. Rarety wise it belongs to the Epic catagory. It also has blast ability from level one. It cost six mana to summon. The life is average for the card.
Pyromancer
Pyromancer is a card from the reward series and belongs to the Epic catagory of cards. It also has the blast ability from level one. One good part is you can get the card from the daily quest or from the season end rewards. But no days it is also difficult as the reward card are also not easy to get from quest lol...