G3-Gas attack

Distribute four -1/1 counters among any
non-artifact creatures (Remove them during the endstep).
G3 Gas, also known as "GG Gas" is a potent,
fast-acting, and lethal Chemical Weapon developed by
the Principality of Zeon and used during the One
Week Battle up until the Antarctic Treaty and was
one of the leading causes of civilian fatalities during
the One Year War.