I'm asking because I'm interested in providing tanking/support to my allies (I play with my IRL friends more often than I play alone). I always use the dogs and the gargantuan, and both have proven to be helpful tanking tools-- the last boss fight I was in, the boss was focused on my gargantuan almost through the entire fight. Anyway, I thought that the Bad Medicine passive would be a good thing to take to help out my teammates (lowers the damage output of enemies you've dealt poison damage to). So, to make that passive work, do I need to use abilities that specifically do poison damage, or is my '6-9 poison dagger' doing it already?
Thanks in advance.