Flexo

MomCorp (This spell costs {1} less to play for each robot in your shop and graveyard.)

Get it? It's chlorine! — When Flexo enters the battlefield or attacks, put two -1/-1 counters on target creature an opponent controls.

"Yeah, keep laughing, brine shrimp, but he's bad
news. I regret ever running him over."
—Fry