Volatile Sparkgolem

When Volatile Sparkgolem enters the battlefield, flip a coin. If you win that flip, put a +1/+1 counter on Volatile Sparkgolem, and you may repeat the process. If you loose, remove all +1/+1 counters on Volatile Sparkgolem.
"Well...this is why we do test after all. Let's just make sure no one brings explosives in the lab next time."
-Nanari, Elemental Prodigy