Soldier 76, the Experiment

At the beginning of your upkeep, put a +1/+1 counter and a charge counter on Soldier 76.
{u}{r},{t}: Remove 6 charge counters from Soldier 76. Soldier 76 deals damage equal to its power to all creatures your opponents control. During your next end step, remove all +1/+1 counters from Soldier 76.
"Stay frosty."