I used a very similar deck in the first trial of life. I did that because life is most vulnerable to fire, a single ROF can wipe out an entire life army. Fire buckler also kills adrenaline more than efficiently. I tried to use life's worst enemy to gain an edge on my opponent, but that deck failed epically. My opponent didn't use a single frog in that deck, he used forest spirits. For the purpose of not compromising the speed of the life portion too much I only had a mark of fire. The explosion did nothing, because he had no permanent besides pillar, and ROF is too slow with my mark powering it, by the time I could cast one, his spirits have grown out of ROF range a long time ago. Fire shield also failed, because spirits out grows it. I figure the pendulums could make things different, it's quite remarkable really, making quanta in a duo deck easily balanced.