Caustic, Toxic Trapper

Menace
When Caustic, Toxic Trapper enters the battlefield, put a -1/-1 counter on each creature
your opponents control.
At the beginning of your upkeep create a 0/1
artifact trap creature named Nox Barrel, it has
defender and "When this creature blocks,
sacrifice it, when you sacrifice it this way put a
-1/-1 counter on creatures it blocked.
"I don't concern myself with the ambitions of insects."