Yes, but you can buff him, and the upgraded version has 3 hp, so he can explode twice even without buffs. But there are so many ways that you can keep using this guy if you need to. Chaos Power, plate armor, blessing, guardian angel (for the Fire Stallion) etc...
My favorite would probably be to get him out early and Basilisk Blood him. +0/+20 gives you 10 deflags for a total cost of 29 fire quanta and 2 earth quanta.
But to each his own.
I figure if I get a few people saying the card isn't useful, and a few people saying that it is, then that is a good indication that the card is balanced. I look forward to seeing what more people say about my cards. They were fun to make.
Jallen