There was the awesome efficiency of wolfsbane with its deadly store of aconite.
"The Status Civilization" by Robert Sheckley
For his destruction Medea mingles the wolfsbane, which she once brought with her from the shores of Scythia.
"The Metamorphoses of Ovid" by Publius Ovidius Naso
It was wolfsbane did it good, beat up in water quite fine.
"When Ghost Meets Ghost" by William Frend De Morgan