One of the better cards in Forgotten Age. If you are going to be poisoned, this is the way to do it. Some good combos include:

Creeping Poison - Allowing you to deal testless damage to an investigator, then draw an additional encounter card. Snakescourge - Allows you to draw an additional encounter card.

You can also use this card to make autofails more likely, which is great for an Any% run.

This is not the best card if you are trying to win the campaign.