Infernal Train

When Infernal Train enters the battlefield, put a -1/-1 counter on each creature target player controls.
{4}, {t}: Proliferate, then proliferate again. (You choose any number of permanents and/or players with counters on them, then give each another counter of a kind already there. Then do it again.)
"Madness and destruction. You shouldn't ask questions you know the answer to, it's not polite."
-The Queen of Hearts